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.
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HOMESERVICE MANUALSBUICK2015REGAL BASE, 2.0L ENG VIN X, AWDREPAIR AND DIAGNOSISGENERAL INFORMATIONRESET PROCEDURESPROGRAMMING AND SETUP - ALL SYSTEMSREPAIR INSTRUCTIONSCONTROL SOLENOID VALVE AND TRANSMISSION CONTROL MODULE ASSEMBLY PROGRAMMING AND SETUP (6T40)TCM REPROGRAMMING
2015 Buick Regal Base, 2.0L Eng VIN X, AWD
TCM Reprogramming
2015 Buick Regal Base, 2.0L Eng VIN X, AWDSECTION 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.
- In some cases, the TCM and ECM may have to be reprogrammed. When a selection for TCM Transmission Control Module Programming is not available, select SEQ Programming Sequence ECM/TCM (Automatic Transmission Only).
- If the TCM needs to be reprogrammed. Refer to Service Programming System (SPS) Description .
- Perform the Transmission Adaptive Values Learn. Refer to Transmission Adaptive Values Learn .
NOTE:
- Turn the ignition OFF for 30 seconds.
- Turn the ignition ON with the engine OFF.
- Use the scan tool in order to retrieve history DTCs from all modules.
- Clear all history DTCs.
NOTE:
After programming, perform the following to avoid future misdiagnosis:
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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.