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 DIAGNOSISSTEERINGPOWER STEERING SYSTEMDIAGNOSTIC INFORMATION AND PROCEDURESDTC C0845CIRCUIT/SYSTEM TESTING
2008 Chevrolet HHR LT, 2.4 P, Automatic
Circuit/System Testing
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Circuit/System Testing
- Ignition OFF, disconnect the X2 harness connector at the PSCM.
- Verify that a test lamp does not illuminate between the ignition 1 circuit terminal 6 and ground.
- If the test lamp illuminates, test the ignition 1 circuit for a short to voltage. If the circuit tests normal, replace the BCM.
- Ignition ON, verify that a test lamp illuminates between the ignition 1 circuit terminal 6 and ground.
- If the test lamp does not illuminate, test the ignition 1 circuit for a short to ground or and open/high resistance. If the circuit tests normal, replace the BCM.
- If all circuits test normal, replace the steering column.
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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.