Repair Procedures
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
- Control valve body replacement: Refer to Control Valve Lower Body and Upper Body Replacement .
- Perform the Torque Converter Removal and Holding Fixture Installation (6L80/6L90) and Torque Converter Installation and Holding Fixture Removal (6L80/6L90) .
- Control solenoid (w/body and TCM) valve assembly replacement: Refer to Control Module References for replacement, setup, and programming.
- Transmission pump repair or replacement: Refer to Torque Converter Housing with Fluid Pump Removal and Torque Converter Housing with Fluid Pump Installation .
- Perform the Service Fast Learn Adapts if internal transmission repairs are performed.