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.
Pre-Removal Procedure
- Use a scan tool and retrieve the remaining service data.
- Record the remaining service data.
If the engine control module (ECM) is replaced with a NEW ECM, the NEW ECM must be updated with the remaining service data retrieved from the OLD ECM.
If the ECM is replaced, the following procedures must be performed:
- Inability to test the ECM for warranty purposes.
- Inability to use the ECM in other vehicles.
- Perform the ECM reset procedure. Refer to Engine Control Module Programming and Setup .
- Perform the theft deterrent programming. Refer to Theft Deterrent Module Programming and Setup .
The ECM must be reset prior to the removal from the vehicle. Failing to reset the ECM will result in the following:
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.
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