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.
ECM Replacement
If the engine control module (ECM) is replaced, the following procedures must be performed:
- Test the ECM for warranty purposes.
- Install the ECM into other vehicles.
- ECM reset procedure.
- ECM reprogramming-Refer to Service Programming System (SPS) .
- The Throttle Learn procedure-Refer to Throttle/Idle Learn .
- The Crankshaft Position Variation Learn-Refer to Crankshaft Position System Variation Learn .
- The Theft Deterrent Programming-Refer to Theft Deterrent Module Programming and Setup .
When replacing the ECM, the ECM must be reset prior to removal. Failure to perform this procedure will result in the inability to:
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.
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