Repair Instructions
WARNING: This page is about a different car, the 2019 GMC Savana 3500, 2019 GMC Savana 2500, 2019 Chevrolet Express 3500, and 2019 Chevrolet Express 2500. 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
- Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement (LWN Diesel) , or Automatic Transmission Fluid, Fluid Pan and/or Filter Replacement (Except LWN Diesel)
- Automatic Transmission Wiring Harness Replacement (Electrical Connector Passage)
- Manual Shift Shaft Position Switch Replacement
- Transmission Control Wiring Harness Replacement
- Transmission Service Fast Learn Procedure
- For control module replacement, programming, and setup refer to: K71 Transmission Control Module: Programming and Setup