2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2655

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2655

Transmission/Transaxle/Testing and Inspection/Symptom Related Diagnostic Procedures/6L45/6L50/6L80/6L90 - Automatic

Transmission/Fluid Pressure High or Low).

2. Ignition OFF, remove the Q8 control solenoid valve assembly. Refer to Control Solenoid Valve and Transmission Control Module Assembly

Replacement (See: Powertrain Management/Transmission Control Systems/Actuators and Solenoids - Transmission and

Drivetrain/Actuators and Solenoids - A/T/Shift Solenoid/Service and Repair).

3. Perform the Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test (See: Transmission and

Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component Tests and General Diagnostics/6L45/6L50/6L80/6L90 -

Automatic Transmission/Control Solenoid Valve and Transmission Control Module Assembly Solenoid Performance Test). Test all solenoids

on the Q8 control solenoid valve assembly. A pressure change should occur for each solenoid valve.

瀚慖f the Q8 control solenoid valve assembly does not pass the performance test, replace the Q8 control solenoid valve assembly.

4. Listed in the chart below are conditions for each component that could set DTC P0756. Carefully inspect each component for that condition.

Repair or replace as necessary.

Repair Instructions

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

* Perform the Service Fast Learn Adapts (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and

Inspection/Programming and Relearning) following all transmission related repairs.

* Control Module References (See: Testing and Inspection/Programming and Relearning) for control solenoid valve assembly replacement,

setup, or programming.

2ML70 - Automatic Transmission

DTC P0756

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 P0756

- Shift Solenoid (SS) 2 Valve Performance - Stuck Off

Circuit/System Description

The shift solenoid valve 2 is part of the control solenoid valve assembly and is not serviced separately. The shift solenoid valve 2 is a normally

closed solenoid valve and controls fluid to the hybrid low, 1-2 clutch boost valve assembly and related clutches. During this diagnostic test,

intrusive actions are taken by the transmission control module to test the shift solenoid valve 2 to see if the valve is stuck OFF. When in EVT 1,

gear 1, or gear 2, if the correct gear ratio is not achieved in a predetermined period of time, the TCM commands gear 3 and if gear 3 ratio is attained

this indicates a stuck OFF shift solenoid valve 2 and the DTC will set.

Conditions for Running the DTC