2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2563
conditions that may cause a no-start have been corrected.
1. Ignition in the CRANK position, verify the scan tool Ignition Run/Crank parameter is Active.
瀚慖f not the specified value, refer to Power Mode Mismatch (See: Power and Ground Distribution/Testing and Inspection/Symptom
Related Diagnostic Procedures/Power Mode Mismatch).
2. Perform the 10-Minute Immobilizer Relearn procedure. Refer to Immobilizer System Component Programming (See: Accessories and
Optional Equipment/Antitheft and Alarm Systems/Testing and Inspection/Programming and Relearning). The ECM should successfully
complete the password learn and the vehicle should start.
瀚慖f the ECM does not complete the learn or vehicle starting remains disabled, replace the ECM.
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 ECM replacement, setup, and programming
2ML70 - Automatic Transmission
DTC P0634
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 P0634
- Transmission Control Module (TCM) Overtemperature
Diagnostic Fault Information
