Reprogram Control Module after Transmission Repair/Replacement
WARNING: This page is about a different car, the 2022 Buick Envision. However, it is still accessible from the selected car via links, so may be relevant.
To program an existing K71 Transmission Control Module, after a transmission repair/replacement, perform the following procedure:
- Install EL-49642 SPS programming support tool.
- Access the Service Programming System (SPS) and follow the on-screen instructions.
- Perform the SPS Transmission Control Module programming event. Choose one of the following screen prompts:
- Select Transmission Control Module - MCVM Operations, and follow the on-screen instructions. This will update the Solenoid Characterization data only.
- Select Transmission Control Module - Programming and follow the on-screen instructions. This will update the TCM calibration and the Solenoid Valve Characterization data.
- Perform the Vehicle Setup, follow the on screen instructions.
- With a scan tool, clear DTCs from the K71 Transmission Control Module.
- Ignition OFF for 2 minutes.