2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 2000
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Control valve body replacement-Refer to Control Valve Body Replacement (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Valve Body/Service and Repair/AF40-6 - Automatic Transmission/Control Valve Body Replacement) for
replacement, setup, and programming.
* TCM-Refer to Control Module References (See: Testing and Inspection/Programming and Relearning) for replacement, setup, and
programming.
* Perform the Transmission Adaptive Functions (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Description and
Operation/AF40-6 - Automatic Transmission/Transmission Adaptive Functions).
* Wiring harness-Refer to Automatic Transmission Wiring Harness Replacement (See: Transmission and Drivetrain/Automatic
Transmission/Transaxle/Wiring Harness/Service and Repair) for replacement.
6T70/6T75 - Automatic Transmission
DTC P2762, P2763, or P2764
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 P2762
- Torque Converter Clutch (TCC) Pressure Control Solenoid System Performance
DTC P2763
- Torque Converter Clutch (TCC) Pressure Control Solenoid Control Circuit High Voltage
DTC P2764
- Torque Converter Clutch (TCC) Pressure Control Solenoid Control Circuit Low Voltage
Diagnostic Fault Information
Circuit/System Description
The torque converter clutch (TCC) pressure control (PC) solenoid is part of the control solenoid valve assembly, which has no serviceable
components. The normally low TCC PC solenoid regulates oil pressure to the TCC regulator valve and TCC control valve. Increasing TCC PC
solenoid oil pressure increases oil pressure to the torque converter to apply the clutch. The TCM varies the current to the TCC PC solenoid through
a low side driver. Increasing current to the TCC PC solenoid increase oil pressure by closing OFF the solenoid exhaust port. Decreasing current to
the TCC PC solenoid decreases oil pressure by opening up the solenoid exhaust port. The TCC PC solenoid power 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
P2762
* DTC P2762 has not set this ignition cycle.
* The engine speed is greater than 400 RPM for 5 seconds.
* The ignition voltage is 8.6 volts or greater.
P2763
* No DTCs P0658, P0659 or P2763.
* The engine speed is greater than 400 RPM for 5 seconds.
* The ignition voltage is 8.6 volts or greater.
* The high side driver is enabled.
P2764
* No DTCs P0658, P0659 or P2764.
* The engine speed is 400 RPM for 5 seconds.
* The ignition voltage is 8.6 volts or greater.
