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 235 (SUPPLEMENTAL INFLATABLE RESTRAINT SYSTEM)DIAGNOSTIC INFORMATION AND PROCEDURESPASSENGER PRESENCE SYSTEM PRELOAD TEST (BASE)PASSENGER PRESENCE SYSTEM PRELOAD SYSTEM TEST
2008 Chevrolet HHR LT, 2.4 P, Automatic
Passenger Presence System Preload System Test
2008 Chevrolet HHR LT, 2.4 P, AutomaticSECTION Passenger Presence System Preload System Test
WARNING: This page is about a different car, the 2010 Pontiac G5 and 2010 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.
- Empty the front outboard passenger seat (this system is susceptible to conductive material).
- With the scan tool, perform the Preload Passenger Presence Detection System procedure.
- Using the scan tool, check for DTC 1071 in history. If the test fails or DTC 1072 is current, confirm that there is no conductive material on the seat. If the test fails again, for heated seats, ensure that the sensor pad is on top of the heater element. Once the test successfully completes, cycle the ignition OFF.
- Perform the Diagnostic System Check - Vehicle after successfully completing the preload test procedure to ensure the system is functioning properly.
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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.