Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Transmission Control Module (TCM) Reprogramming
Use a scan tool to view and record the Transmission Control Module - End Model Part Number in the original TCM prior to starting the TCM reprogramming procedure.
To reprogram an existing K71 Transmission Control Module, perform the following procedure:
- Using a Scan Tool, access the Service Programming System (SPS) and follow the on-screen instructions.
- Perform the SPS function, Prepare Control Module for Removal, if available.
- Perform the SPS function K71 Transmission Control Module-Programming and follow the on-screen instructions.
- Clear DTC's after completing the Programming procedure.NOTE:
If vehicle fails to start during Configuration and Setup, perform the SPS Function Immobilizer Learn and follow the on-screen instructions.
- Perform the SPS function K71 Transmission Control Module-Configuration and follow the on-screen instructions, if available.NOTE:
When prompted select the file from Prepare Control Module for Removal.
- Clear DTC's after completing the Configuration & Setup procedure.
Use the Manual With the Right Hardware
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.