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 Wiring Harness Replacement (Electrical Connector Passage)
- Input and Output Speed Sensor Replacement - B14D Transmission Intermediate Shaft Speed Sensor
- Transmission Control Wiring Harness Replacement
- Transmission Service Fast Learn Procedure
- For control module replacement, programming, and setup refer to: Control Module References