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:
- Connect a scan tool to the vehicle and access SPS. Refer to Service Programming System (SPS) .NOTE: The Prepare Control Module for Removal function can only be performed when communication with the old control module is still possible.
- Before removing the old control module, perform the SPS function Prepare Control Module for Removal.
- Replace the ECM.
- Perform the SPS function Engine Control Module - Programming and follow the on-screen instructions.
- Perform the SPS Function Immobilizer Learn. Refer to Immobilizer System Component Programming .
- Clear DTCs after completing the programming procedure.
- Start and idle engine.
- Perform the throttle/idle learn. Refer to Q38 Throttle Body: Throttle/Idle Learn
- Perform the crankshaft position system learn. Refer to Crankshaft Position Variation Learn
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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