Repair Instructions

WARNING: This page is about a different car, the 2018 Chevrolet Suburban 3500 HD. 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

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