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 DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 78 (SHIFT LOCK CONTROL SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESTRANSMISSION CONTROL LEVER MALFUNCTION (WITHOUT WHB)CIRCUIT/SYSTEM TESTING
2010 Chevrolet Aveo LT, 4D Hatchback, Standard
Circuit/System Testing
2010 Chevrolet Aveo LT, 4D Hatchback, StandardSECTION Circuit/System Testing
WARNING: This page is about a different car, the 2011 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition OFF, disconnect the harness connector at the stop lamp switch.
- Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal 3 and ground.
- If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance.
- Ignition OFF, connect the harness connector at the stop lamp switch. Disconnect the harness connector at the automatic transmission shift lock actuator.
- Test for less than 1Ξ© between the ground circuit terminal 2 and ground.
- If greater than the specified range, test the ground circuit for an open/high resistance.
- Ignition ON, connect a test lamp between the control circuit terminal 4 and ground.
- Observe the test light while applying and releasing the brake pedal. The test lamp should turn ON and OFF when applying and releasing the brake pedal.
- If the test lamp is always ON, test the control circuit for a short to voltage. If the circuit tests normal, test or replace the stop lamp switch.
- If the test lamp is always OFF, test the control circuit for a short to ground or an open/high resistance. If the circuit tests normal, replace the stop lamp switch.
- Test for less than 1Ξ© between the control circuit terminal 3 and the control circuit terminal 1.
- If greater than the specified range, test the control circuit for a short to ground or an open/high resistance.
- If all circuit tests normal, replace the automatic transmission shift lock actuator.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.