2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2124
Description and Operation
* Transmission General Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/6L45/6L50/6L80/6L90 - Automatic Transmission/Transmission General Description)
* Transmission Component and System Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/6L45/6L50/6L80/6L90 - Automatic Transmission/Transmission Component and System Description)
* Electronic Component Description (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/6L45/6L50/6L80/6L90 - Automatic Transmission/Electronic Component 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-47825-10 - Jumper Harness
Circuit/System Verification
1. Engine Running, accessories OFF, measure and record the battery voltage with a DMM. The battery voltage should be between 12.6-15
volts.
瀚慖f the voltage is not within the specified value, or the charge indicator light is ON, refer to Charging System Test (See: Starting and
Charging/Testing and Inspection/Component Tests and General Diagnostics/Charging System Test).
2. Observe the scan tool TCM Ignition Voltage parameter. The reading should be between 12.6-15 volts.
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
1. Ignition OFF, disconnect the X1 16-way harness connector at the transmission.
2. Connect the DT-47825-10 - harness to the X1 16-way vehicle harness connector.
3. Test for less than 5 ohms between terminal 5 and ground at the transmission case.
瀚慖f greater than the specified range, test the ground circuit for an open/high resistance.
4. Ignition ON, verify that a test lamp illuminates between the ignition voltage circuit and B+ circuit terminals listed below and ground.
* Terminal 4 and ground at the transmission case
* Terminal 12 and ground at the transmission case
瀚慖f the test lamp does not illuminate, test the ignition circuit or B+ circuit for a short to ground or an open/high resistance.
5. If all circuits test normal, replace the Q8 control solenoid valve assembly.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for Control Solenoid Valve Assembly
Replacement, Setup, and Programming.
* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and
Inspection/Programming and Relearning) following all transmission related repairs.
