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.

IMPORTANT: Perform the Control Solenoid Valve and Transmission Control Module Assembly Inspection for the following components before replacing the components.

Internal Mode Switch (IMS) Replacement. Refer to Manual Shift Shaft Position Switch Replacement .
Control Solenoid (w/Body and TCM) Valve Assembly Replacement. Refer to Control Module References for replacement, setup, and programming.