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.
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HOMESERVICE MANUALSCHEVROLET2010AVEO LT, 4D HATCHBACK, STANDARDREPAIR AND DIAGNOSISBODY & FRAMEIGNITION SWITCH/STEERING LOCKIMMOBILIZER SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESCOMMUNICATION BETWEEN IMMOBILIZER CONTROL UNIT AND TEST EQUIPMENT
2010 Chevrolet Aveo LT, 4D Hatchback, Standard
Communication Between Immobilizer Control Unit and Test Equipment
2010 Chevrolet Aveo LT, 4D Hatchback, StandardSECTION Communication Between Immobilizer Control Unit and Test Equipment
- Connect the test equipment as described in the Scan Tool Equipment Manual.
- If communication between the scan tool and the test equipment was unsuccessful, wait 30 seconds and try again.
- If communication was not successful on the second try, turn the ignition OFF and check the wire and connectors between the immobilizer control unit terminal 7 and the data link connector (DLC) terminal 7.
- If the wire and connectors between the DLC and the immobilizer control unit are okay, replace the immobilizer control unit. Refer to Theft Deterrent Module Replacement .
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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.