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.
2015 Chevrolet Spark LS, Automatic CVT TransFACTORY OEM SERVICE PROCEDURE
Transmission Control Module (TCM) Reprogramming
- If the TCM needs to be reprogrammed, refer to Service Programming System (SPS) .NOTE: 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.
- Perform the Transmission Solenoid Values Calibration Preset. Refer to Transmission Adaptive Pressure Reset (Transmission Solenoid Valves Calibration Preset - M4M) .
- Turn the ignition OFF for 30 seconds.NOTE: After programming, perform the following to avoid future misdiagnosis:
- 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.
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.