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.
2005 Chevrolet Aveo L4-1.6L VIN 6FACTORY OEM SERVICE PROCEDURE
Engine Control Module: Service and Repair
ENGINE CONTROL MODULE (ECM) REPLACEMENT
REMOVAL PROCEDURE
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
1. Disconnect the negative battery cable.
2. Disconnect the engine control module (ECM) connectors.
3. Remove the ECM retaining bolts.
4. Remove the ECM from the ECM mount.
INSTALLATION PROCEDURE
1. Position the ECM in place.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the ECM to the ECM mount and install the retaining bolts.
Tighten
Tighten the ECM retaining bolts to 4 N.m (35 lb in).
3. Connect the negative battery cable.
4. Perform the following procedures:
- Program the ECM
- CKP System Variation Learn Procedure
- Idle Learn Procedure
Programming and Relearning
REMOVAL PROCEDURE
CAUTION: Refer to Battery Disconnect Caution in Service Precautions.
1. Disconnect the negative battery cable.
2. Disconnect the engine control module (ECM) connectors.
3. Remove the ECM retaining bolts.
4. Remove the ECM from the ECM mount.
INSTALLATION PROCEDURE
1. Position the ECM in place.
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the ECM to the ECM mount and install the retaining bolts.
Tighten
Tighten the ECM retaining bolts to 4 N.m (35 lb in).
3. Connect the negative battery cable.
4. Perform the following procedures:
- Program the ECM
- CKP System Variation Learn Procedure
- Idle Learn Procedure
Programming and Relearning
Factory Service Tools
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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