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 MANUALSCHEVROLET2008HHR LT, 2.4 P, AUTOMATICREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 14 (POWER DOOR LOCK SYSTEM AND RELEASE SYSTEMS)DIAGNOSTIC INFORMATION AND PROCEDURESPOWER DOOR LOCKS MALFUNCTIONCOMPONENT TESTING
2008 Chevrolet HHR LT, 2.4 P, Automatic
Component Testing
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Component Testing
WARNING: This page is about a different car, the 2008 Pontiac G5 and 2008 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
Door Lock Switch Test
- Ignition OFF, disconnect the harness connector at the appropriate door lock switch.
- Test for infinite resistance between the signal terminal C and the ground terminal A with the switch in the idle position.
- If less than the specified value, replace the door lock switch.
- Test for less than 2 ohms of resistance between the signal terminal C and the ground terminal A with the switch in the lock position.
- If greater than the specified value, replace the door lock switch.
- Test for 1.4K-1.6K ohms of resistance between the signal terminal C and the ground terminal A with the switch in the unlock position.
- If not within the specified range, replace the door lock switch.
Door Latch
- Ignition OFF, disconnect the harness connector at the appropriate door latch.
- Install a 15A fused jumper wire between the control terminal 2 and 12 volts. Momentarily install a jumper wire between the control terminal 3 and ground. The door latch should perform the LOCK/ UNLOCK function
- If the function does not perform as specified, replace the door latch.
- Reverse the jumper wires; the door latch should perform the UNLOCK/LOCK function.
- If the function does not perform as specified, replace the door latch.
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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.