2010 Cadillac Truck SRX FWD V6-3.0L Page 1871

2010 Cadillac Truck SRX FWD V6-3.0L Page 1871

Circuit/System Description

The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding

air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the

HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a

range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module

uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S

voltage that decreases toward 0 mV indicates a lean fuel mixture.

The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed

Loop earlier and the control module to calculate the air-to-fuel ratio sooner.

Conditions for Running the DTC

P0133, P0153, P1133, or P1153

* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,

P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,

P2101, P2119, P2135, P2176 are not set.

* The engine coolant temperature (ECT) is greater than 71掳C (159掳F).

* The intake air temperature (IAT) is warmer than -40掳C (-40掳F)

* The ignition 1 voltage is between 10-32 V.

* The fuel level is greater than 10 %.

* The engine run time is greater than 60 s.

* The engine speed is between 1,000-3,000 RPM.

* The barometric (BARO) pressure is greater than 70 kPa.

* The mass airflow (MAF) is between 15-55 g/s.

* The fuel system is in Closed Loop.

* The throttle position (TP) is greater than 5 %.

* The DTCs run once per drive cycle when the above conditions are met.

P013A P013C, P013E, or P014A

* Before the ECM can report DTC P013A, or P013C failed, DTCs P013E, P014A, P2270, and P2272 must run and pass.

* Before the ECM can report DTC P013E, or P014A failed, DTCs P2270 and P2272 must run and pass.

* DTCs P0030, P0036, P0053, P0054, P0101, P0102, P0103, P0106, P0107, P0108, P0120, P0121, P0122, P0123, P0131, P0132, P0133,

P0134, P0135, P0137, P0138, P013A, P013B, P013E, P013F, P0140, P0141, P0171, P0172, P0201, P0202, P0203, P0204, P0220, P0222,

P0223, P0300, P0442, P0443, P0446, P0449, P0455, P0496, P1133, P1174, P1516, P2101, P2119, P2135, P2176, P2270, P2271, P2A00 are

not set.

* The ignition 1 voltage is between 10-32 V.

* The learned heater resistance is valid.

* The fuel level is greater than 10 %.

* The engine run time is equal to or greater than 5 min.

* The accelerator pedal (APP) is steady.

2010 Cadillac Truck SRX FWD V6-3.0L Page 2176

2010 Cadillac Truck SRX FWD V6-3.0L Page 2176

DTC Descriptor

DTC U2099 00

- High Speed Communication Enable Circuit

Diagnostic Fault Information

Circuit/System Description

The body control module (BCM) activates the serial data communication enable circuit, when the ignition key is in ACC, ON or START. The serial

data communication enable circuit wakes up the modules for serial data buss communication.

Conditions for Running the DTC

* The system voltage is between 9-16 volts.

* The vehicle power mode master requires serial data communication to occur.

Conditions for Setting the DTC

The BCM senses a short to ground on the serial data communication enable circuit.

Action Taken When the DTC Sets

* The output command is turned off while the malfunction is present.

* The modules use a default value for the missing parameters until the next ignition cycle.

* The module(s) is never signaled, therefore the specific subsystem(s) will not function.

* The vehicle will not start while the circuit is shorted to ground.

Conditions for Clearing the DTC

* A current DTC clears when the malfunction is no longer present.

* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.

Diagnostic Aids

* Use the DMM MIN/MAX function to capture/locate intermittent conditions.

* Short to ground will also set multiple history no communication codes for GMLAN high speed modules.

Reference Information

Schematic Reference

Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Data Link Communications Description and Operation (See: Powertrain Management/Computers and Control Systems/Information

Bus/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Circuit/System Testing

2010 Cadillac Truck SRX FWD V6-3.0L Page 2128

2010 Cadillac Truck SRX FWD V6-3.0L Page 2128

- Brake Band Pressure Control Solenoid Valve Control Circuit Low Voltage

DTC P2730

- Brake Band Pressure Control Solenoid Valve Control Circuit High Voltage

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The shift control solenoid (SLB1) is installed on the front valve body. The solenoid linearly controls hydraulic pressure in response to signals

output from the transmission control module TCM. Through this, the SLB1 controls operating hydraulic pressure to the brake for smooth shifting.

According to each shift control solenoid assembly, the transmission shifts from 1st gear into 6th gear and vice versa. As a fail-safe function, if any

shift control solenoid assembly abnormality occurs, the TCM will disable the current to the solenoids.

Conditions for Running the DTC

P2725

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D range.

* TCM communication is normal.

* DTCs P2729 and P2730 are not set.

P2728

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D range.

* TCM communication is normal.

* The automatic transmission fluid temperature is more than 20掳C (68掳F).

* SLB1 current is more than 0.85 A.

* SLB1 current is not changed.

P2729

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D range.

* TCM communication is normal.

* DTC P2730 is not set.

P2730

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* Driving in D range.

* TCM communication is normal.

* DTC P2729 is not set.

Conditions for Setting the DTC

2010 Cadillac Truck SRX FWD V6-3.0L Page 1229

2010 Cadillac Truck SRX FWD V6-3.0L Page 1229

- HO2S Circuit Insufficient Activity Bank 1 Sensor 2

DTC P0154

- HO2S Circuit Insufficient Activity Bank 2 Sensor 1

DTC P0160

- HO2S Circuit Insufficient Activity Bank 2 Sensor 2

Diagnostic Fault Information

Typical Scan Tool Data

Circuit/System Description

The heated oxygen sensors (HO2S) are used for fuel control and catalyst monitoring. Each HO2S compares the oxygen content of the surrounding

air with the oxygen content of the exhaust stream. When the engine is started, the control module operates in an Open Loop mode, ignoring the

HO2S signal voltage while calculating the air-to-fuel ratio. While the engine runs, the HO2S heats up and begins to generate a voltage within a

range of 0-1,275 mV. Once sufficient HO2S voltage fluctuation is observed by the control module, Closed Loop is entered. The control module

uses the HO2S voltage to determine the air-to-fuel ratio. An HO2S voltage that increases toward 1,000 mV indicates a rich fuel mixture. An HO2S

voltage that decreases toward 0 mV indicates a lean fuel mixture.

The heating elements inside each HO2S heat the sensor to bring the sensor up to operating conditions faster. This allows the system to enter Closed

Loop earlier and the control module to calculate the air-to-fuel ratio sooner.

Conditions for Running the DTC

* DTCs P0068, P0101, P0102, P0103, P0106, P0107, P0108, P0112, P0113, P0116, P0117, P0118, P0120, P0121, P0122, P0123, P0128,

P0201, P0202, P0203, P0204, P0205, P0206, P0207, P0208, P0220, P0222, P0223, P0442, P0443, P0446, P0449, P0455, P0496, P1516,

P2101, P2119, P2135, P2176 are not set.

* The ignition 1 voltage is between 10-32 V.

* The engine run time is greater than 150 s.

* The fuel system is in Closed Loop.

* The DTCs run continuously when the above conditions are met.

Conditions for Setting the DTC

Disclaimer2010 Cadillac Truck Escalade RWD V8-6.2L Technical Service Bulletin # 11273 Date: 120920

Disclaimer2010 Cadillac Truck Escalade RWD V8-6.2L Technical Service Bulletin # 11273 Date: 120920

Campaign - Throttle Position Sensor Replacement

SPECIAL COVERAGE

Bulletin No.: 11273

Date: September 20, 2012

Subject: -- 11273 Special Coverage Adjustment Throttle Position Sensor Replacement

Models:

2008-2010 Cadillac Escalade, Escalade ESV, Escalade EXT

2008-2009 Chevrolet TrailBlazer

2008-2010 Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe

2009-2010 Chevrolet Colorado

2008-2009 GMC Envoy

2008-2010 GMC Savana, Sierra, Yukon, Yukon XL

2009-2010 GMC Canyon

2008-2009 HUMMER H2

2008-2010 HUMMER H3

2009-2010 HUMMER H3T

Equipped with V8 Engine (LFA, LY2, L20, LMG, LC9, LH6, LMF, LH8, LH9, L76, LS2, LY5, LY6, L92, L96, LZ1, L94, L9H)

Customers involved in this Special Coverage will be notified in phases. The first phase will include customers with 2008 model year vehicles.

Condition

On some 2008-2009 Chevrolet TrailBlazer; GMC Envoy; HUMMER H2; 2008-2010 Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet

Avalanche, Express, Silverado, Suburban, Tahoe; GMC Savana, Sierra, Yukon, Yukon XL; HUMMER H3; 2009-2010 Chevrolet Colorado; GMC

Canyon; and HUMMER H3T vehicles, equipped with a V8 engine, the throttle position sensor may cause the engine to run rough and cause the

malfunction indicator lamp and/or an Engine Reduced Power message to illuminate. If this occurs, it could result in reduced engine power.

Special Coverage Adjustment

This special coverage covers the condition described above for a period of 10 years or 120,000 miles (193,000 km), whichever occurs first, from

the date the vehicle was originally placed in service, regardless of ownership.

Dealers are to replace the throttle position sensor and reprogram the Engine Control Module. The repairs will be made at no charge to the customer.

For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after September 21, 2012, are covered by this special

coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to September 21, 2012,

must be submitted to the Service Contract provider.

Vehicles Involved

All involved vehicles are identified by Vehicle Identification Number on the Applicable Warranties section in GM Global Warranty Management

2010 Cadillac Truck Escalade RWD V8-6.2L Page 30

system. Dealership service personnel should always check this site to confirm vehicle involvement prior to beginning any required inspections

and/or repairs. It is important to routinely use this tool to verify eligibility because not all similar vehicles may be involved regardless of description

or option content.

Parts Information

Parts required to complete this special coverage are to be obtained from General Motors Customer Care and Aftersales (GMCC&A).

Customer Reimbursement - For US

Customer requests for reimbursement of previously paid repairs to correct the condition described in this bulletin are to be submitted to the dealer

by December 31, 2013, unless otherwise specified by state law. If this is not convenient for the customer, they may mail the completed Customer

Reimbursement Request Form and all required documents to the GM Customer Assistance Center. Repairs must have occurred within the 10 years

of the date the vehicle was originally placed in service, or 120,000 miles, whichever occurs first.

All reasonable and customary costs to correct the condition described in this bulletin should be considered for reimbursement. Any

questions or concerns should be reviewed with your District Service Manager - Aftersales prior to processing the request.

When a customer requests reimbursement, they must provide the following:

- A completed Customer Reimbursement Request Form. This form is mailed to the customer or can be obtained through GM GlobalConnect.

- The name and address of the person who paid for the repair.

- Paid receipt confirming the amount of the repair expense, a description of the repair, and the person or entity performing the repair.

Important

GM requires dealers to approve or deny a reimbursement request within 30 days of receipt. If a reimbursement request is approved, the

dealer should immediately issue a check to the customer and submit an appropriate warranty transaction for the incurred expense. If a

reimbursement request is denied, the dealer MUST provide the customer with a clear and concise explanation, in writing, as to why the request

was denied. The bottom portion of the Customer Reimbursement Request Form may be used for this purpose. If the denial was due to missing

documents, the customer can resubmit the request when the missing documents are obtained, as long as it is still within the allowed reimbursement

period.

Warranty transactions for customer reimbursement of previously paid repairs are to be submitted as required by GM Global Warranty Management.

Additional information can also be found in Warranty Administration Bulletin 11-00-89-004.

Customer Reimbursement - For Canada and Export

Customer requests for reimbursement of previously paid repairs to correct the condition described in this bulletin are to be submitted to the dealer

prior to or by December 31, 2013. Repairs must have occurred within the 10 years of the date the vehicle was originally placed in service, or

193,000 kilometers, whichever occurs first.

When a customer requests reimbursement, they must provide the following:

- Proof of ownership at time of repair.

- Original paid receipt confirming the amount of unreimbursed repair expense(s) (including Service Contract deductibles), a description of the

repair, and the person or entity performing the repair.

If the work was done by someone other than a GM dealership, the amount of reimbursement will be limited to the amount that the repair would

have cost GM to have it completed by a GM dealership.

Courtesy Transportation - For US and Canada

The General Motors Courtesy Transportation program is intended to minimize customer inconvenience when a vehicle requires a repair that is

covered by the New Vehicle Limited Warranties. The availability of courtesy transportation to customers whose vehicles are within the warranty

coverage period and involved in a product program is very important in maintaining customer satisfaction. Dealers are to ensure that these

customers understand that shuttle service or some other form of courtesy transportation is available and will be provided at no charge. Dealers

should refer to the General Motors Service Policies and Procedures Manual for Courtesy Transportation guidelines.

Warranty Transaction Information

Submit a transaction using the table below.

2010 Cadillac Truck Escalade RWD V8-6.2L Page 31

* The amount identified in "Net Item" should represent the dollar amount reimbursed to the customer.

Customer Notification

General Motors will notify customers of this special coverage on their vehicles (see copy of typical customer letter included with this bulletin -

actual divisional letter may vary slightly).

Disclaimer

Service Procedure

Service Procedure

Caution

Handle the electronic throttle control components carefully. Use cleanliness in order to prevent damage. Do not drop the electronic throttle control

components. Do not roughly handle the electronic throttle control components. Do not immerse the electronic throttle control components in

cleaning solvents of any type.

Warning

Approved safety glasses and gloves should be worn when performing this procedure to reduce the chance of personal injury.

1. With a scan tool, verify that DTC P2135 is set as Current or in History.

- If DTC P2135 is set as Current or in History, proceed to Step 2 and perform the service procedure in this bulletin.

- If DTC P2135 is NOT set as Current or in History, refer to Diagnostic Trouble Code (DTC) List - Vehicle or Symptoms - Engine

Controls in SI. Determine cause of condition. Repairs, if required, are NOT covered by the labor operation codes in this bulletin. Bill

repair under warranty, goodwill assistance or customer pay.

2. Turn OFF the ignition.

3. Open the hood.

Note

If at any time during this procedure the throttle body is dropped, abort this procedure and REPLACE it with a new throttle body assembly.

4. Remove the throttle body and discard the throttle body gasket. Refer to Throttle Body Assembly Replacement in SI.

5. Remove any loose debris and dirt from the throttle body assembly and the TP sensor cover. Inspect the throttle body for damage.

Caution

Do not use any solvent that contains Methyl Ethyl Ketone (MEK). This solvent may damage fuel system components.

6. Clean the throttle body bore and the throttle plate using a clean shop towel with GM Top Engine Cleaner, P/N 1052626 (in Canada, P/N

993026), or AC-Delco Upper Engine and Fuel Injector Cleaner, P/N X66-P, or an equivalent product.

2010 Cadillac Truck Escalade RWD V8-6.2L Page 32

Note

DO NOT mount the throttle body in a vise. The throttle body can be set on the top of a soft protected workbench area.

7. Hold the throttle body with your hand, so that the throttle position (TP) sensor cover is facing upward as shown.

8. Secure a rubber band around the throttle body and TP sensor cover as shown.

9. Turn over the throttle body and use a flathead screwdriver to remove the two clips (1, 2) as shown. Discard the clips.

Caution

Do NOT pry on the machined sealing surface of the throttle body inlet duct.

10. Turn over the throttle body and use a flathead screwdriver to remove the four remaining clips from the TP sensor cover. Discard the clips.

11. Hold the throttle body with your hand, so that the TP sensor cover is facing upward. Grasp the TP sensor cover and carefully lift it up and

separate it from the throttle body.

2010 Cadillac Truck Escalade RWD V8-6.2L Page 33

Note

DO NOT allow the intermediate gear to fall out.

12. Maintain the throttle body in an upward position. Use your thumb to maintain contact with the intermediate gear.

If the intermediate gear falls out and impacts a hard workbench surface or the floor, abort this procedure and REPLACE with a new throttle

body assembly.

13. Verify that the TP sensor cover gasket HAS REMAINED in the TP sensor cover as shown. Ensure that the gasket is accounted for and

remains with the old TP sensor cover.

Note

If one or both of the TP sensor cover female throttle actuator motor terminals HAVE BEEN retained on the throttle actuator motor male

terminals (2), remove and discard those female terminals.

14. Observe the TP sensor cover for missing female throttle actuator motor terminals (1). Verify that the female throttle actuator motor terminals

HAVE REMAINED in the TP sensor cover and HAVE NOT been retained on the throttle actuator motor male terminals (2). Discard the old

TP sensor cover, gasket and terminals.

15. Remove the new TP sensor cover from the protective shipping wrapper.

2010 Cadillac Truck Escalade RWD V8-6.2L Page 34

Note

If the TP sensor drive slot orientation is not aligned as shown, use a small flathead screwdriver to gently rotate the TP sensor drive slot

clockwise to the wide open throttle (WOT) position as shown.

16. Place the TP sensor cover in the position as shown. Confirm the TP sensor drive slot orientation is aligned in the TP sensor cover as shown.

17. Verify that the TP sensor cover gasket is secure and properly positioned.

Note

The three TP sensor cover alignment tabs are highlighted in white for identification purposes only.

18. Verify that all three of the TP sensor cover alignment tabs are present and are not damaged.

19. Grasp and hold the throttle body in the previously hand held upward position. Lightly depress the intermediate gear to verify that it is fully

seated and the gears are engaged.

2010 Cadillac Truck Escalade RWD V8-6.2L Page 35

20. Rotate the throttle body plate to the WOT position (1).

21. Position and install the TP sensor cover to the throttle body. Hold the TP sensor cover in position. If necessary for ease of the clip

installation, secure a rubber band around the throttle body and TP sensor cover.

22. Install the first new TP sensor cover clip (1) in the position shown.

23. Install the remaining new TP sensor cover clips in the sequence shown.

24. Install a NEW throttle body gasket to the intake manifold.

25. Install the throttle body, bolts and nuts. DO NOT tighten the fasteners yet.

26. Connect the electrical connector to the throttle body.

27. Turn ON the ignition. Clear the DTC with a scan tool.

28. Observe the scan tool TP Sensor 1 and 2 Agree/Disagree parameter while slowly depressing the accelerator pedal to WOT and then slowly

returning the pedal to closed throttle. Repeat the procedure several times. Rapidly depress the accelerator pedal from the rest position to the

wide open throttle position (WOT) and release pedal. Repeat the procedure several times. The TP Sensor 1 and 2 Agree/Disagree parameter

should display Agree.

- If TP Sensor 1 and 2 Agree/Disagree parameter displays Agree, proceed to Step 29.

2010 Cadillac Truck Escalade RWD V8-6.2L Page 36

- If TP Sensor 1 and 2 Agree/Disagree parameter displays Disagree, replace the throttle body assembly.

29. Observe the engine control module (ECM) module DTC information. Are DTC P1516, P2101 and/or P2176 set?

- If DTC P1516, P2101 and/or P2176 are set, replace the throttle body.

- If DTC P1516, P2101 and/or P2176 are not set, proceed to Step 30.

30. Tighten the throttle body fasteners.

Tighten:

Tighten the fasteners to 10 Nm (89 lb in).

31. Install any remaining components that were removed during this procedure.

32. Verify the battery voltage is more than 12 volts but less than 16 volts before proceeding with ECM reprogramming.

33. During reprogramming, the battery voltage must be maintained within the proper range of 12-15 volts. Connect the approved Midtronics(R)

PSC 550 Battery Maintainer (SPS Programming Support Tool EL-49642) to the vehicle.

If the above recommended tool is not available, DO NOT connect a battery charger to the vehicle. Connect a fully charged 12V jumper or

booster pack that is disconnected from the AC voltage supply.

34. Use a Tech 2(R) or a multiple diagnostic interface (MDI) module for reprogramming. Ensure that either device is updated with the latest

available software version before performing the reprogramming event.

35. Reprogram the ECM using the Service Programming System (SPS) with the latest calibration available on TIS2WEB. Refer to the SPS

procedures in SI.

36. Perform the Throttle Learn Reset Procedure. Refer to Throttle/Idle Learn > Throttle Learn > Reset Procedure in SI.

Owner Letter

Owner Letter

Dear General Motors Customer:

As the owner of a 2008, 2009, or 2010 GM vehicle, your satisfaction with our product is very important to us.

This letter is intended to make you aware that some 2008-2009 Chevrolet TrailBlazer; GMC Envoy; HUMMER H2; 2008-2010 Cadillac Escalade,

Escalade ESV, Escalade EXT; Chevrolet Avalanche, Express, Silverado, Suburban, Tahoe; GMC Savana, Sierra, Yukon, Yukon XL; HUMMER

H3; 2009-2010 Chevrolet Colorado; GMC Canyon; and HUMMER H3T vehicles, equipped with a V8 engine, may have a condition where the

throttle position sensor may cause the engine to run rough and cause the malfunction indicator lamp and/or an Engine Reduced Power message to

illuminate. If this occurs, it could result in reduced engine power.

Do not take your vehicle to your GM dealer as a result of this letter unless you believe that your vehicle has the condition as described above.

What We Have Done: General Motors is providing owners with additional protection for the condition described above. If this condition occurs

on your 2008-2009 Chevrolet TrailBlazer; GMC Envoy; HUMMER H2; 2008-2010 Cadillac Escalade, Escalade ESV, Escalade EXT; Chevrolet

Avalanche, Express, Silverado, Suburban, Tahoe; GMC Savana, Sierra, Yukon, Yukon XL; HUMMER H3; 2009-2010 Chevrolet Colorado; GMC

Canyon; or HUMMER H3T vehicle, equipped with a V8 engine, within 10 years of the date your vehicle was originally placed in service or

120,000 miles (193,000 km), whichever occurs first, the condition will be repaired for you at no charge. Diagnosis or repair for conditions other

than the condition described above is not covered under this special coverage program.

What You Should Do: If you believe that your vehicle has the condition described above, repairs and adjustments qualifying under this special

coverage must be performed by a General Motors dealer. You may want to contact your GM dealer to find out how long they will need to have

your vehicle so that you may schedule the appointment at a time that is convenient for you. This will also allow your dealer to order parts if they are

not already in stock. Keep this letter with your other important glove box literature for future reference.

Reimbursement: If you have paid for repairs for the condition described in this letter, please complete the enclosed form and present it to your

dealer with all required documents. Working with your dealer will expedite your request, however, if this is not convenient, you may mail the

completed form and all required documents to Reimbursement Department, PO Box 33170, Detroit, MI 48232-5170. The completed form and

required documents must be presented to your dealer or received by the Reimbursement Department by December 31, 2013, unless state law

specifies a longer reimbursement period.

If you have any questions or need any assistance, just contact your dealer or the appropriate Customer Assistance Center at the number listed

below.

2010 Cadillac Truck Escalade RWD V8-6.2L Page 37

We are sorry for any inconvenience you may experience; however we have taken this action in the interest of your continued satisfaction with our

products.

Jim Moloney

General Director,

Customer and Relationship Services

2010 Cadillac Truck SRX FWD V6-3.0L Page 1127

2010 Cadillac Truck SRX FWD V6-3.0L Page 1127

Circuit Description

The manifold absolute pressure (MAP) sensor has a 5 V reference circuit, a low reference circuit, and a signal circuit. The engine control module

(ECM) supplies 5 V to the MAP sensor on the 5 V reference circuit, and provides a ground for the low reference circuit. The MAP sensor provides

a voltage signal to the ECM on the signal circuit relative to the intake manifold pressure changes.

Conditions for Running the DTC

* DTC P0697 is not set.

* The engine is running.

* This DTC runs continuously within the enabling conditions.

Conditions for Setting the DTC

P0107

The ECM detects that the MAP sensor voltage is less than 0.20 V for more than 5 s.

P0108

The ECM detects that the MAP sensor voltage is more than 4.80 V for more than 5 s.

Action Taken When the DTC Sets

DTCs P0107 and P0108 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0107 and P0108 are Type B DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

* J 23738-A - Mityvac

* J 35555 - Metal Mityvac

2010 Cadillac Truck SRX FWD V6-3.0L Page 2181

2010 Cadillac Truck SRX FWD V6-3.0L Page 2181

Action Taken When the DTC Sets

The module uses a default value for the missing parameters.

Conditions for Clearing the DTC

* A current DTC clears when the malfunction is no longer present.

* A history DTC clears when the module ignition cycle counter reaches the reset threshold of 50, without a repeat of the malfunction.

Diagnostic Aids

* Use the DTC Descriptor list above to determine the module which is not communicating.

* If there are multiple non-communicating modules choose the one closest to the data link connector (DLC).

* Use Data Link References (See: Powertrain Management/Computers and Control Systems/Information Bus/Testing and Inspection/Initial

Inspection and Diagnostic Overview) to determine if the module uses high or low speed GMLAN serial data communications

* Some modules may not have internal protection for specific voltage outputs and may open a battery positive voltage or ignition voltage

source fuse. If a voltage input fuse is open and no short is found in that circuit, ensure that no module output voltage circuit is shorted to

ground before replacing the module.

* This diagnostic can be used for any module that should communicate with high or low speed GMLAN serial data providing the vehicle is

equipped with the option that uses that module.

Reference Information

* Data Communication Schematics (See: Powertrain Management/Computers and Control Systems/Information Bus/Diagrams/Electrical

Diagrams)

* Control Module References (See: Testing and Inspection/Programming and Relearning)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Data Link Communications Description and Operation (See: Powertrain Management/Computers and Control Systems/Information

Bus/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool References

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Testing

Note: If more than one module is not communicating use Data Communication Schematics (See: Powertrain Management/Computers and

Control Systems/Information Bus/Diagrams/Electrical Diagrams) to determine which module is closest to the DLC. Start diagnostics with that

module.

Terminal and connector identifiers will be different depending on the individual module being tested. Use Schematic Reference and Connector End

View Reference to determine which connector and terminal to access.

1. Using the DTC Descriptor and Diagnostic Aids, determine the module that is not communicating that should be tested.

2. Ignition OFF, disconnect the harness connector of the module that is not communicating.

3. Test for less than 2 ohms between the module ground circuits and ground.

瀚慖f greater than specified range, test the ground circuit for an open/high resistance.

Note: Only the high speed GMLAN modules have a wired serial data wake up circuit. Refer to the module schematics to identify which

modules have a wake up circuit. If the module that is not communicating does not have a serial data wake up circuit, proceed to step 5.

4. Ignition ON, verify that a test lamp illuminates between the high speed GMLAN serial data wake up circuit OR the accessory wake up serial

data circuit and ground.

2010 Cadillac Truck SRX FWD V6-3.0L Technical Service Bulletin # 09-08-50-015B Date: 100115

2010 Cadillac Truck SRX FWD V6-3.0L Technical Service Bulletin # 09-08-50-015B Date: 100115

Electrical - L/H Seat Inop./Erratic Memory Sys Operation

TECHNICAL

Bulletin No.: 09-08-50-015B

Date: January 15, 2010

Subject: Driver Power Seat Inoperative, Outside Mirrors Do Not Return to Original Position with Park Tilt Mirrors, Memory Remote Recall

Intermittent Operation, Adjustable Pedals Inoperative (Reprogram Memory Seat Module)

Models:

2010 Cadillac SRX

Built Prior to January 6, 2010

2010 Chevrolet Equinox

2010 GMC Terrain

All Built Prior to November 2, 2009

Supercede:

This bulletin is being revised to update the 2010 Cadillac SRX build date. Please discard Corporate Bulletin Number 09-08-50-015A (Section 08 -

Body and Accessories).

Condition

Some customers may comment on one or more of the following concerns:

- The driver power seat is inoperative (when equipped with Memory Seat only).

The driver seat will not move forward, rearward and the recliner will not move forward or rearward. The customer may also experience the

inability to move the seat up or down.

- The outside mirrors do not return to the original position after the Park Tilt Mirrors function is engaged.

The customer may report that the outside mirrors tilt downward when placing the vehicle in reverse, attempt to return to the original position,

but do not reach the memory position after taking the vehicle out of reverse. The customer may also witness the mirrors staying in the tilt

position and not returning to the memory position at all.

- The Memory Remote Recall feature operates intermittently.

If the customer enables the Memory Remote Recall feature in the Vehicle Personalization menu, they may comment about intermittent

operation.

- The Adjustable Pedals are inoperative (Cadillac SRX only).

The customer may experience the inability to move the Adjustable Pedals forward or rearward.

2010 Cadillac Truck SRX FWD V6-3.0L Page 199

Cause

This condition may be caused by a software state, interaction of features and serial data messages that can contribute to one or more of the above

conditions.

Correction

Important

DO NOT replace the MSM for this concern.

Reprogram and perform the Setup procedure for the MSM with the latest software calibration. Refer to Memory Seat Control Module Programming

and Setup in SI.

Important

Select the correct calibration files for the appropriate vehicle configuration (body style) and RPO codes.

A revised calibration has been developed to address this condition. Technicians are to reprogram the MSM using the Service Programming System

(SPS) with the latest software available on TIS2WEB. Refer to the Service Programming System (SPS) procedures in SI.

When using a Tech 2(R) or a Multiple Diagnostic Interface (MDI) for reprogramming, ensure that it is updated with the latest software version.

During programming, the battery voltage must be maintained within the proper range of 12-15 Volts. Only use the approved Midtronics(R) PSC

550 Battery Maintainer (SPS Programming Support Tool EL-49642) or equivalent during programming.

Warranty Information

For vehicles repaired under warranty, use the table above.

2010 Cadillac Truck SRX FWD V6-3.0L Page 912

2010 Cadillac Truck SRX FWD V6-3.0L Page 912

DTC C1256 00

- Control Module Programming Checksum Error Malfunction

Circuit/System Description

When the ignition is turned ON, the microprocessor runs a diagnostic program to detect an internal fault when power up is commanded. If an

internal malfunction is detected, the control module will set a DTC.

Conditions for Running the DTC

Ignition ON

Conditions for Setting the DTC

The control module detects an internal malfunction.

Action Taken When the DTC Sets

Specific subsystems will not function or operate in degraded mode.

Conditions for Clearing the DTC

A current DTC clears when the diagnostic runs and passes.

Reference Information

Schematic Reference

Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning)for scan tool information

Circuit/System Testing

1. Ignition ON, verify that DTC C056D or C056E is not present in the electronic brake control module (EBCM).

瀚慖f any listed DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) to diagnose that DTC prior to this diagnostic.

2. Replace the K17 Electronic Brake Control Module (EBCM) and verify the DTC does not reset.

瀚慖f the DTC resets, replace the module that set the DTC.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

Control Module References (See: Testing and Inspection/Programming and Relearning)for module replacement, setup and programming

2010 Cadillac Truck SRX FWD V6-3.0L Page 2135

2010 Cadillac Truck SRX FWD V6-3.0L Page 2135

DTC P2762 is a Type C DTC.

P2763

* DTC P2763 is a Type A DTC.

* The TCM inhibits 6th gear.

* The TCM commands the hot mode shift pattern.

* The TCM inhibits Tap Up/Down function.

* The TCM inhibits manual shifting of forward gears.

P2764

* DTC P2764 is a Type A DTC.

* The TCM inhibits TCC.

* The TCM freezes transmission adaptive functions.

* The TCM commands maximum line pressure.

* The TCM inhibits Tap Up/Down function.

* The TCM inhibits manual shifting of forward gears.

* The TCM limits the transmission to reverse and 5th gear.

* The TCM commands the high side driver OFF.

Conditions for Clearing the DIC/DTC

* DTC P2762 is a Type C DTC.

* DTCs P2763 and P2764 are Type A DTCs.

Reference Information

Connector End View Reference

* Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

* Inline Harness Connector End Views (See: Diagrams/Connector Views/Multiple Junction Connector/Connector End Views By Number)

Description and Operation

Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and Operation/6T70/6T75 -

Automatic Transmission/Transmission General Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Special Tools

DT-47825-20 Adapter Harness

Circuit/System Verification

1. Operate the vehicle in second gear long enough to ensure at least a 3掳C (5掳F) rise in TCM temperature.

2. Operate the vehicle in drive range and ensure TCC is commanded ON for 1 minute. Verify with a scan tool the following test status

parameters display OK:

* TCC PC Sol. Perf. Test Status

* TCC PC Sol. Ctrl. Ckt. High Voltage Test Status

* TCC PC Sol. Ctrl. Ckt. Low Voltage Test Status

3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

2010 Cadillac Truck SRX FWD V6-3.0L Page 1851

2010 Cadillac Truck SRX FWD V6-3.0L Page 1851

DTC Descriptors

DTC P0976

- Shift Solenoid (SS) 2 Control Circuit Low Voltage

DTC P0977

- Shift Solenoid (SS) 2 Control Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The shift solenoid (SS) 2 is part of the control solenoid valve assembly which has no serviceable components. SS 2 is a normally closed (NC)

ON/OFF solenoid and is controlled by the TCM through a low side driver. When the SS 2 is energized (ON), SS 2 fluid pressure is directed to the

clutch select valve 3, which allows the valve to overcome the spring pressure and move to the applied position. Power to the SS 2 is supplied by the

TCM through a high side driver (HSD). The HSD protects the circuit and components from excessive current flow. If excessive current flow is

detected, the HSD will turn OFF. When the fault is corrected, the HSD will reset.

Conditions for Running the DTC

P0976

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P0976 has not set this ignition cycle.

P0977

* The engine speed is greater than 400 RPM for 5 seconds.

* The ignition voltage is 8.6 volts or greater.

* DTC P0977 has not set this ignition cycle.

Conditions for Setting the DTC

P0976

The TCM detects a short to ground on the SS 2 control circuit for 2 seconds.

P0977

The TCM detects an open or short to power on the SS 2 control circuit for 2 seconds.

Action Taken When the DTC Sets

P0976

* DTC P0976 is a Type B DTC.

* The TCM freezes transmission adaptive functions.

* The TCM commands maximum line pressure.

P0977

* DTC P0977 is a Type A DTC.

* The TCM limits the transmission to reverse and 5th gear.

* The TCM inhibits the torque converter clutch (TCC).

* The TCM commands maximum line pressure.

* The TCM freezes transmission adaptive functions.

* The TCM turns the high side driver OFF.

* The TCM inhibits Tap Up/Down function.

* The TCM inhibits manual shifting of forward gears.

Conditions for Clearing the DIC/DTC

* DTC P0976 is a Type B DTC.

* DTC P0977 is a Type A DTC.

Reference Information

Connector End View Reference

2010 Cadillac Truck SRX FWD V6-3.0L Page 1254

2010 Cadillac Truck SRX FWD V6-3.0L Page 1254

瀚慖f greater than the specified value, test the signal circuit for a short to voltage.

16. Connect a 3 A fused jumper wire between the signal circuit terminal B and the 5 V reference circuit terminal A. Verify the scan tool Fuel

Rail Pressure Sensor voltage parameter is greater than 4.96 V.

瀚慖f less than the specified value, test the signal circuit for an open/high resistance or a short to ground.

17. If all circuits test normal, replace the B47 fuel rail fuel pressure sensor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pressure

Sensor/Switch/Service and Repair/Fuel Pressure Sensor Replacement - Fuel Injection Fuel Rail)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0192

DTC P0192 or P0193 (LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0192

- Fuel Rail Pressure Sensor Circuit Low Voltage

DTC P0193

- Fuel Rail Pressure Sensor Circuit High Voltage

Diagnostic Fault Information

Circuit/System Description

The fuel rail fuel pressure sensor detects fuel pressure within the fuel rail. The engine control module (ECM) provides a 5 V reference voltage on

the 5 V reference circuit and ground on the reference ground circuit. The ECM receives a varying signal voltage on the signal circuit. The ECM

monitors the voltage on the fuel rail fuel pressure sensor circuits. When the fuel pressure is high, the signal voltage is high. When the fuel pressure

is low, the signal voltage is low.

Conditions for Running the DTC

* The engine is running.

* The ignition voltage is between 11-18 V.

* The DTCs run continuously within the enabling conditions.

Conditions for Setting the DTC

P0192

The ECM detects that the fuel rail fuel pressure sensor signal voltage is low.

2010 Cadillac Truck SRX FWD V6-3.0L Page 1409

2010 Cadillac Truck SRX FWD V6-3.0L Page 1409

- Knock Sensor Circuit Low Voltage Bank 1

DTC P0328

- Knock Sensor Circuit High Voltage Bank 1

DTC P0330

- Knock Sensor Circuit Bank 2

DTC P0331

- Knock Sensor Performance Bank 2

DTC P0332

- Knock Sensor Circuit Low Voltage Bank 2

DTC P0333

- Knock Sensor Circuit High Voltage Bank 2

DTC P06B6

- Control Module Knock Sensor Processor 1 Performance

DTC P06B7

- Control Module Knock Sensor Processor 2 Performance

Diagnostic Fault Information

Circuit/System Description

The knock sensor system enables the engine control module (ECM) to control the ignition timing for the best possible performance while protecting

the engine from potentially damaging levels of detonation. The knock sensor produces an AC voltage signal that varies depending on the vibration

level during engine operation. The ECM adjusts the spark timing based on the amplitude and the frequency of the knock sensor signal. The ECM

receives the knock sensor signal through 2 isolated signal circuits for each bank. The ECM learns a minimum knock sensor noise level for all of the

RPM range. The ECM monitors for a normal knock sensor signal. The ECM monitors the internal knock sensor processor by verifying a 20 KHz

signal generated on the output circuit is detected on the return circuit.

Conditions for Running the DTC

P0324, P0326 and P0331-Excessive Knock Detection Mode

* Engine speed is between 400-8,500 RPM.

* The engine coolant temperature (ECT) is warmer than -40掳C (-40掳F).

* The intake air temperature (IAT) is warmer than -40掳C (-40掳F).

* The DTCs run continuously when the above conditions are met.

P0324, P0326 and P0331-Abnormal Noise Detection Mode-Improperly Bolted Knock Sensor

* Engine speed is between 2,200-8,500 RPM.

* The ECT is warmer than -40掳C (-40掳F).

* The IAT is warmer than -40掳C (-40掳F).

* The DTCs run continuously when the above conditions are met.

P0325, P0327, P0328, P0330, P0332, and P0333

* Engine speed is between 400-8,500 RPM.

* The ECT is warmer than -40掳C (-40掳F).

* The IAT is warmer than -40掳C (-40掳F).

* The DTCs run continuously when the above conditions are met.

P06B6 and P06B7

* Engine speed is between 400-4,000 RPM.

* The ECT is warmer than -40掳C (-40掳F).

* The IAT is warmer than -40掳C (-40掳F).

* The DTCs run continuously when the above conditions are met.

Conditions for Setting the DTC

P0324

The ECM detects that the knock sensor signal indicates an excessive engine knock is present for greater than 10 s for at least 1 single cylinder.

2010 Cadillac Truck SRX FWD V6-3.0L Technical Service Bulletin # 11-08-49-001F Date: 130419

2010 Cadillac Truck SRX FWD V6-3.0L Technical Service Bulletin # 11-08-49-001F Date: 130419

Instruments - Transport Mode ON Message Displayed in DIC

TECHNICAL

Bulletin No.: 11-08-49-001F

Date: April 19, 2013

2010 Cadillac Truck SRX FWD V6-3.0L Page 283

Subject: Transport Mode On Message Displayed in Driver Information Center (DIC) and/or Battery Light is Flashing (Follow Procedure as

Outlined Below)

Models:

2011-2014 Buick Regal

2012-2014 Buick Verano

2013-2014 Buick Encore

2010-2014 Cadillac SRX

2013-2014 Cadillac ATS, XTS

2010-2014 Chevrolet Camaro

2011-2014 Chevrolet Cruze, Volt

2012-2014 Chevrolet Orlando (Canada), Sonic

2013-2014 Chevrolet Spark, Trax

Supercede:

This bulletin is being revised to add the 2014 model year. Please discard Corporate Bulletin Number 11-08-49-001E (Section 08 - Body and

Accessories).

Condition

Some customers may comment that there is a "Transport Mode On" message displayed in the DIC and/or the red battery light is flashing. The

transport mode is intended for use on vehicles being shipped outside of the United States and Canada.

For the 2014 model year, some products will be shipped from the assembly plant with the Transportation Mode On. The feature reduces the

electrical load on the battery when the vehicle is parked, which extends the battery stand time.

To alert the operator that the mode is on, the red battery telltale will be flashing and if equipped with a DIC, it will display a Transport Mode On

message. When the Transport mode is on, the Remote Keyless Entry (key fobs) is disabled, as well content theft deterrent and exit lighting timers

are reduced.

When the vehicle is running, the only difference in operation will be the DIC Message and Battery Telltale on. The Remote Keyless Entry function

is restored with the ignition in run.

The intent of the feature is to prolong battery stand time. The mode may be left on while the vehicle is in dealer inventory. Also a customer may

want to use the mode if the vehicle is going to be stored. The method to turn the mode off is the same to turn the mode on. See below for the

method to turn the mode off and on.

Correction

2011-2014 Vehicle Procedure

To turn the Transport Mode On/Off, it will be necessary to start the engine, activate the hazard flashers, press the brake pedal, then press and hold

the Start/Stop button or turn the ignition key to the crank position for 15 seconds. The same steps are used to turn on the feature.

2010 Chevrolet Camaro Procedure

To turn the Transport Mode On/Off, it will be necessary to activate the hazard flashers, turn the ignition key to the crank position, and then hold it

in the crank position for 15 seconds. The Transport Mode Off message will be displayed and the Battery light will turn off.

2010 Cadillac SRX Procedure

To turn the Transport Mode On/Off, it will be necessary to push and hold the Start/Stop button while the brake is applied for 15 seconds or until the

Transport Mode Off message is displayed. For SRX, if Transport Mode is active, this causes the RKE system to only work when the ignition is On

or the BCM is awake (approximately 20 minutes after ignition off).

Note

On vehicles that are shipped from the assembly plant with the transportation mode on, turning the feature off is included in the normal

PDI process time. No additional warranty claims should be submitted to disable or enable this feature.

Disclaimer

2010 Cadillac Truck SRX FWD V6-3.0L Page 284

2010 Cadillac Truck SRX FWD V6-3.0L Page 1932

2010 Cadillac Truck SRX FWD V6-3.0L Page 1932

The ECM detects a short to voltage in the Camshaft Position Actuator Solenoid Valve circuits for greater than 1 s or a cumulative of 5 s, when the

solenoid valve is commanded ON.

Action Taken When the DTC Sets

DTCs P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094, and P2095 are type B DTCs.

Conditions for Clearing the DTC

DTCs P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094, and P2095 are type B DTCs.

Diagnostic Aids

If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan too circuit status

parameters for the component. The circuit status parameters change from OK or Not Run to Fault if there is a condition with the circuit or a

connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Camshaft Actuator System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Camshaft

Actuator System)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. With the engine at normal operating temperature, raise the engine speed to 2,000 RPM for 10 s. DTCs P0010, P0013, P0020, P0023, P2088,

P2089, P2090, P2091, P2092, P2093, P2094, or P2095 should not set.

2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve.

2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 1 and ground.

瀚慖f the test lamp does not illuminate, test the circuit for a short to ground or an open/high resistance. If the circuit tests normal and the

ignition circuit fuse is open, test all the components connected to the ignition circuit and replace as necessary.

3. Connect a DMM, set on the diode setting, between the control circuit terminal 2 and ground. The voltage should be greater than 2 V.

瀚慖f the DMM displays OL, test the control circuit for a short to voltage or an open/high resistance. If the circuit/connections test normal,

replace the K20 Engine Control Module.

瀚慖f less than the specified value, test the control circuit for a short to ground. If the circuit tests normal, replace the K20 Engine Control

2010 Cadillac Truck SRX FWD V6-3.0L Page 1858

2010 Cadillac Truck SRX FWD V6-3.0L Page 1858

Typical Scan Tool Data

Circuit/System Description

Shift solenoid valve 1 is installed on the middle valve body. The solenoid turns ON and OFF in response to signals output from the TCM.

According to the ON or OFF status of shift solenoid valve 1 or shift solenoid valve 2, the 1st gear engine brake operates or the gear shifts into

change. As a fail-safe function, if any shift solenoid abnormality occurs, the transmission control module (TCM) will disable the current to the

solenoids.

Conditions for Running the DTC

P0985

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* 10 ms after solenoid output changed.

P0986

* The ignition voltage is 10.2-15.5 V.

* The engine speed is greater than 400 RPM for 2 s.

* The transmission is not in emergency mode.

* 10 ms after solenoid output changed.

Conditions for Setting the DTC

P0985

The TCM detects an ON signal (12 V) of the shift solenoid valve 1 circuit when the shift solenoid valve 1 is commanded OFF (0 V) for 100 ms

continuously after 5 times.

P0986

The TCM detects an OFF signal (0 V) of the shift solenoid valve 1 circuit when the shift solenoid valve 1 is commanded ON (12 V) for 100 ms

continuously after 5 times.

Action Taken When the DTC Sets

* DTCs P0985 and P0986 are Type A DTCs.

* The TCM freezes transmission adaptive functions.

* The TCM turns OFF all solenoids.

* The TCM allows the vehicle to operate only in the second gear and "R" range after a stop.

Conditions for Clearing the DTC

* DTCs P0985 and P0986 are Type A DTCs.

* The TCM detects an ON signal (12 V) of the shift solenoid valve 1 circuit when the shift solenoid valve 1 is commanded ON (12 V) for 1 s

continuously.

* The TCM detects an OFF signal (0 V) of the 1 circuit when the shift solenoid valve 1 is commanded OFF (0 V) for 1 s continuously.

Diagnostic Aids

When attempting to set solenoid electrical DTCs, ensure the control solenoid valve assembly is warmed up and the transmission is operated long

enough to ensure a 3掳C (5掳F) increase in temperature. This will place the TCM in the optimal conditions to test solenoid electrical DTCs.

2010 Cadillac Truck SRX FWD V6-3.0L Page 1992

2010 Cadillac Truck SRX FWD V6-3.0L Page 1992

P2147, P2150, P2153, P2156, P216B, or P216E

The ECM detects the injector high voltage supply circuit is shorted to ground for greater than 2 s.

P2148, P2151, P2154, P2157, P216C, or P216F

The ECM detects the injector high voltage supply circuit is shorted to voltage for greater than 2 s.

Action Taken When the DTC Sets

DTCs P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B, P216C, P216E, and P216F are Type A DTCs.

Conditions for Clearing the DTC

DTCs P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B, P216C, P216E, and P216F are Type A DTCs.

Diagnostic Aids

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (LAU) (See:

Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection)Fuel Injector Solenoid Coil Test (LF1, LFW)

(See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Status parameters. An Injector Control Circuit Status parameter will change from OK or Not Run to Fault if there is a

condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Fuel System Description (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation/Fuel System

Description)Fuel System Description (LAU or LY7) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and

Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Observe the DTC information with a scan tool. DTC P0685 or P1682 should not set.

瀚慖f a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble

Code (DTC) List - Vehicle).

2. Engine operating, observe the DTC information with a scan tool. DTC P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B,

P216C, P216E, or P216F should not set.

3. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

4. Ignition ON, observe the scan tool Cylinder 1-6 Injector Control Circuit Status parameters. Verify the Injector Control Circuit Status

parameters display OK.

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2010 Cadillac Truck SRX FWD V6-3.0L Page 1884

Any loading of the engine that lowers engine RPM, such as with partial application of the clutch, A/C cycling etc., during the first 17 s of engine

run time may set this DTC.

Circuit/System Verification

1. Allow the engine to cool.

2. Start and idle the engine for at least 2 min.

3. DTC P1400 should run and pass.

Circuit/System Testing

* Inspect the air intake system for the following:

- Damage, restriction, or modification

- Dirty or deteriorating air filter element

- Crankcase ventilation system for correct operation-Refer to Crankcase Ventilation System Inspection/Diagnosis (See: Powertrain

Management/Emission Control Systems/Positive Crankcase Ventilation/Testing and Inspection).

- Water intrusion

- Vacuum leak and other un-metered air downstream of the mass air flow (MAF) sensor

- Intake manifold leak

* Inspect the exhaust system for the following:

- Water intrusion

- Exhaust leak

- Damaged, restricted, modified or enhanced exhaust system-Refer to Symptoms - Engine Exhaust (See: Engine, Cooling and

Exhaust/Exhaust System/Testing and Inspection/Symptoms - Engine Exhaust).

* Inspect the engine mechanical for items that could alter the air flow into the combustion chamber. Refer to Symptoms - Engine Mechanical (

See: Engine, Cooling and Exhaust/Engine/Testing and Inspection/Symptom Related Diagnostic Procedures/Symptoms - Engine Mechanical).

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

P1516

DTC P1516, P2101, P2119, or P2176 (LF1, LFW)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P1516

- Throttle Actuator Control (TAC) Module Throttle Actuator Position Performance

DTC P2101

- Throttle Actuator Position Performance

DTC P2119

- Throttle Closed Position Performance

DTC P2176

- Minimum Throttle Position Not Learned

Diagnostic Fault Information

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2010 Cadillac Truck SRX FWD V6-3.0L Page 1077

瀚慖f movement affects the parameter, repair the appropriate harness or connector.

4. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the appropriate B52 HO2S.

2. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit terminal D and ground.

瀚慖f the test lamp does not illuminate, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests

normal and the B52 HO2S heater circuit fuse is open, test all components connected to the fuse and replace as necessary.

3. Ignition ON, observe the appropriate scan tool HO2S Heater Control Open Circuit Test Status parameter. The parameter should display

Malfunction.

瀚慖f not the specified value, test the heater control circuit terminal E for a short to ground, or for a short to voltage. If the circuit tests

normal, replace the K20 ECM.

4. Connect a 3 A fused jumper wire between the heater control circuit terminal E and ground. Observe the appropriate scan tool HO2S Heater

Control Circuit Low Voltage Test Status parameter. The parameter should transition from OK to Malfunction.

瀚慖f not the specified value, test the heater control circuit terminal E for an open/high resistance. If the circuit tests normal, replace the K20

ECM.

Note:

* Less than 10 ohm of additional resistance on the ignition voltage circuit, or control circuit may set a DTC. If there is resistance on a

circuit, the driver will remain ON and the scan tool HO2S High Voltage Test Status parameter will display OK.

* Performing this test may set additional DTCs.

5. Ignition OFF, connect a 10 A fused jumper wire between the control circuit terminal E and the ignition voltage circuit terminal D.

6. Engine idling, observe the appropriate HO2S Control Circuit High Voltage Test Status parameter. The parameter should transition from Not

Run to Malfunction.

瀚慖f not the specified value, test the control circuit and the ignition voltage circuit for high resistance. If the circuits test normal, replace the

K20 ECM.

7. If all circuits test normal, test or replace the appropriate B52 HO2S.

Repair Instructions

Caution: Refer to Heated Oxygen Sensor Resistance Learn Reset Caution (See: Powertrain Management/Computers and Control

Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 1)

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 2)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 1)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P0059

DTC P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060, P0135, P0141, P0155, or P0161 (LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

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Circuit/System Verification

1. Observe the DTC information with a scan tool. DTC P0685 or P1682 should not set.

瀚慖f a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble

Code (DTC) List - Vehicle).

2. Engine operating, observe the DTC information with a scan tool. DTC P2147, P2148, P2150, P2151, P2153, P2154, P2156, P2157, P216B,

P216C, P216E, or P216F should not set.

3. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

4. Ignition ON, observe the scan tool Cylinder 1-6 Injector Control Circuit Status parameters. Verify the Injector Control Circuit Status

parameters display OK.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition OFF, disconnect the appropriate multi-way harness connector X198 or X199, at the rear of the intake manifold.

2. Ignition ON, observe the appropriate scan tool Cylinder 1-6 Injector Control Circuit Status. The parameter should display Open.

瀚慖f not the specified value, test the appropriate high voltage supply circuit, ECM side, for a short to ground or the appropriate high voltage

control circuit, ECM side, for a short to voltage. If the circuits test normal, replace the K20 ECM.

3. Ignition ON, connect a test lamp between the appropriate high voltage supply circuit and the high voltage control circuit. The Injector

Control Circuit Status should transition from Open to OK.

瀚慖f not the specified value, test for the following conditions in the ECM side of the harness:

* An open/high resistance in the high voltage supply circuit

* An open/high resistance in the high voltage control circuit

* A short to ground in the high voltage control circuit

* A short to voltage in the high voltage supply circuit

瀚慖f the circuits test normal, replace the K20 ECM.

Note: Testing for the following steps is performed on the fuel injector side of the multi-way harness connector. It may be necessary to

remove the intake manifold to isolate the condition.

4. Ignition OFF, measure the resistance between the appropriate high voltage supply circuit and ground. The DMM should display OL ohm.

瀚慖f less than the specified range, test the high voltage supply circuit and the high voltage control circuit for a short to ground. If the

circuits/connections test normal, test or replace the appropriate Q17 fuel injector(s).

5. Test for 2-3 ohm between the appropriate high voltage supply circuit and high voltage control circuit.

瀚慖f less than the specified range, test for a short between the high voltage supply circuit and high voltage control circuit. If the

circuits/connections test normal, test or replace the appropriate Q17 fuel injector(s).

瀚慖f greater than the specified range, test the high voltage supply circuit and high voltage control circuit for an open/high resistance. If the

circuits/connections test normal, test or replace the appropriate Q17 fuel injector.

Component Testing

* Fuel Injector Solenoid Coil Test (LAU) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection

)Fuel Injector Solenoid Coil Test (LF1, LFW) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and

Inspection)

* Fuel Injector Balance Test (LAU) (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests

and General Diagnostics/Fuel Injector Balance Test)Fuel Injector Balance Test (LF1, LFW) (See: Powertrain Management/Computers and

Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector Balance Test)

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 1)

* Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

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Electronic Ignition System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Electronic

Ignition System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Engine at operating temperature, all accessories OFF, and engine speed greater than 2,000 RPM, observe the Knock Retard and Total Knock

Retard parameters. The parameters should be 0掳.

2. Engine idling, move the related harnesses and connectors for the KS circuits while observing the scan tool Knock Retard and Total Knock

Retard parameters. The parameters should remain steady with no abrupt changes.

3. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

Note:

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using these diagnostic procedures.

* If an engine mechanical noise can be heard, repair the condition before proceeding with this diagnostic. Refer to Symptoms - Engine

Mechanical (See: Engine, Cooling and Exhaust/Engine/Testing and Inspection/Symptom Related Diagnostic Procedures/Symptoms -

Engine Mechanical).

P0324, P0326 and P0331

1. Using a scan tool, verify DTCs P0335 or P0336 are not set.

瀚慖f any of the DTCs are set, diagnose them first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle).

2. Verify the following conditions do not exist.

* A loose or broken vehicle accessory

* A loose or broken accessory bracket

* Excessive engine mechanical noise

瀚慖f any of the conditions exist, repair as necessary.

3. Replace the K20 ECM if no external knock sensor circuit issues exist.

P0325, P0327, P0328, P0330, P0332, and P0333

1. Ignition OFF, disconnect the affected B68 KS.

2. Verify the affected B68 KS is properly tightened, refer to Fastener Tightening Specifications (See: Powertrain Management/Specifications).

3. Ignition OFF, with appropriate length jumper wires, connect the B68A KS1 harness to the B68B KS2 sensor and the B68B KS2 harness to

the B68A KS1 sensor.

4. Monitor the DTCs using a scan tool. Operate the vehicle within the conditions for running the DTC. Verify the fault does not follow the

sensor in question.

瀚慖f the fault follows the sensor in question, replace the appropriate B68 KS.

5. Ignition OFF, remove the jumper wires from the previous step.

6. Ignition ON, measure for 1-4 V between each of the following circuits and ground on the K20 ECM side of the harness connector:

* The B68 KS signal circuit, terminal A or 1

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Systems/Oxygen Sensor/Service Precautions/Heated Oxygen Sensor Resistance Learn Reset Caution).

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 1)

* Heated Oxygen Sensor Replacement - Bank 1 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 1 Sensor 2)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 1 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 1)

* Heated Oxygen Sensor Replacement - Bank 2 Sensor 2 (LF1) (See: Powertrain Management/Computers and Control Systems/Oxygen

Sensor/Service and Repair/Heated Oxygen Sensor Replacement - Bank 2 Sensor 2)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming

P050D

DTC P050D

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptor

DTC P050D

- Cold Start Rough Idle

Circuit/System Description

During a cold start, the engine control module (ECM) commands dual-pulse mode during Open Loop operation to improve cold start emissions. In

dual-pulse mode, the injectors are energized twice during each injection event. As with misfire diagnosis, in dual-pulse mode the ECM monitors the

crankshaft position sensor and the camshaft position sensors to calculate crankshaft rotation speed. In normal operation, optimum fuel delivery

during dual-pulse mode produces a steady crankshaft rotation speed. If the variations exceed a calibrated value, the code will be set.

Conditions for Running the DTC

* DTCs P0010, P0011, P0013, P0014, P0016, P0017, P0018, P0019, P0020, P0021, P0023, P0024, P0089, P0090-P0092, P00C6, P00C8,

P00C9, P00CA, P0101-P0103, P0106-P0108, P0112-P0114, P0116-P0118, P0121-P0123, P0128, P0192, P0193, P0201-P0206, P0222,

P0223, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P0315, P0335, P0336, P0351-P0356,

P0627-P0629, P069E, P0716, P0717, P0722, P0723, P0850-P0852, P1248, P1249, P124A, P124B, P124C, P124D, P1258, P135A, P135B,

P150C, P163A, P1762, P1763, P1915, P2122, P2123, P2127, P2128, P2135, P2138, P2147, P2148, P2150, P2151, P2153, P2154, P2156,

P2157, P216B, P216C, P216E, P216F, P228C, P228D, U0109 are not set.

* The catalyst temperature is less than 100掳C (212掳F).

* The engine coolant temperature is warmer than 10掳C (14掳F).

* The barometric pressure is greater than 70 kPa.

* The engine speed is between 450-1800 RPM.

* The engine is running and a cold start has been detected.

* DTC P050D runs once per cold start.

Conditions for Setting the DTC

This DTC will set if the ECM detects variations in crankshaft rotation speed caused by the lack of adequate fuel delivery during dual-pulse mode.

Action Taken When the DTC Sets

* DTC P050D is a Type B DTC.

* The ECM disables dual pulse mode and energizes the fuel injector as it would for a warm engine.

Conditions for Clearing the DTC

DTC P050D is a Type B DTC.