Repair Instructions

WARNING: This page is about a different car, the 2020 GMC Terrain and 2020 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.

Perform the Diagnostic Repair Verification after completing the repair: Diagnostic Repair Verification

Control Valve Body Assembly Removal (without ETRS) , or Control Valve Body Assembly Removal (with ETRS) - M123 Transmission Park Valve Lock Solenoid Actuator
For control module replacement, programming, and setup refer to: Control Module References

Additional Procedures

Transmission Service Fast Learn Procedure - Perform only when the component/system is serviced.