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.
2018 Chevrolet Spark LS, Automatic CVT TransFACTORY OEM SERVICE PROCEDURE
Unsuccessful Programming Recovery
If programming a control module is not successful, perform the following procedure:
- Verify the control module, data link connector and programming tool connections are secure and the tool software is up to date.
- Ignition/Vehicle - Off - For greater than 2 min
- Perform the SPS function: Reprogram ECU
- Verify the control module programming is successful.
- If the programming is not successful
Replace the component: K71 Transmission Control Module
- Go to next step: If the programming is successful
- If the programming is not successful
- All OK.
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.