2010 Cadillac Truck Escalade ESV AWD V8-6.2L Page 1718
Repair/2ML70 - Automatic Transmission) for control valve body replacement.
* Hybrid Direct, 2-3-4 Clutch Housing Overhaul (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Service and
Repair/Overhaul/2ML70 - Automatic Transmission/29. Hybrid Direct, 2-3-4 Clutch Housing Overhaul) for hybrid direct, 2-3-4 clutch
replacement or overhaul.
* Control Module References (See: Testing and Inspection/Programming and Relearning) for control solenoid valve assembly replacement,
setup, and programming.
P07A7
DTC P07A7
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 P07A7
- Transmission Clutch 3 Stuck On
Circuit/System Description
The hybrid powertrain control module monitors the clutch slip speed for each Hybrid Trans. Mode Commanded state. This DTC detects no clutch
slip speed when the 4th clutch is commanded OFF, indicating a stuck or welded clutch condition. The 4th clutch is displayed as Clutch 3 on the
scan tool.
Conditions for Running the DTC
* 4th clutch is commanded off.
* The Calc. Trans Input Speed is greater than 250 RPM.
Conditions for Setting the DTC
The 4th clutch is commanded OFF and the hybrid powertrain control module detects the clutch 4 slip speed is less than 80 RPM for 3 seconds.
Action Taken When the DTC Sets
* P07A7 is a Type B DTC.
* The hybrid control module inhibits gear 4.
Conditions for Clearing the DTC
P07A7 is a Type B DTC.
Diagnostic Aids
When attempting to set transmission performance DTCs, observe the Freeze Frame and Failure Records to assist in duplicating the failure
conditions. Ensure the transmission fluid level is correct and there are no leaks. If there are any other transmission DTCs set, diagnose those first.
Reference Information
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. Perform the Transmission Fluid Level and Condition Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing
and Inspection/Symptom Related Diagnostic Procedures/2ML70 - Automatic Transmission/Transmission Fluid Level and Condition Check)
to verify correct fluid level.
2. Perform the Line Pressure Check (See: Transmission and Drivetrain/Automatic Transmission/Transaxle/Testing and Inspection/Component
