Repair Instructions

WARNING: This page is about a different car, the 2020 Buick Regal and 2019 Buick Regal. 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 - B13 Transmission Fluid Temperature Sensor
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.