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 MANUALSCHEVROLET2009HHR L4-2.2LREPAIR AND DIAGNOSISBRAKES AND TRACTION CONTROLANTILOCK BRAKES / TRACTION CONTROL SYSTEMSACCELERATION/DECELERATION SENSORSERVICE AND REPAIR
2009 Chevrolet HHR L4-2.2L
Acceleration/Deceleration Sensor: Service and Repair
2009 Chevrolet HHR L4-2.2LSECTION Service and Repair
Vehicle Yaw Sensor with Vehicle Lateral Accelerometer Replacement
Removal Procedure
1. Turn OFF the ignition.
2. Remove the right front seat. Refer to Front Seat Replacement - Bucket (Front Seat Replacement - Bucket).
3. Remove the right side body hinge pillar trim panel. Refer to Body Hinge Pillar Trim Panel Replacement - Right Side (Service and Repair).
4. Carefully lift the floor carpet to access the yaw rate sensor.
To ease access to the yaw rate sensor, it may be necessary to carefully cut a small section of the floor carpeting neat the yaw rate sensor.
5. Disconnect the yaw rate sensor electrical connector.
6. Remove the yaw rate sensor nuts (1).
7. Remove the yaw rate sensor (1).
Installation Procedure
1. Install the yaw rate sensor (1).
Notice: Refer to Fastener Notice.
2. Install the yaw rate sensor nuts (1).
Tighten the nuts to 10 Nm (89 lb in).
3. Connect the yaw rate sensor electrical connector.
4. Carefully position the floor carpet to the vehicle floor.
5. Install the right side body hinge pillar trim panel. Refer to Body Hinge Pillar Trim Panel Replacement - Right Side (Service and Repair).
6. Install the right front seat. Refer to Front Seat Replacement - Bucket (Front Seat Replacement - Bucket).
7. Install a scan tool.
8. Using the special functions menu on the scan tool, perform the steering angle sensor calibration. Refer to Control Module References (Programming and Relearning).
9. Perform the Diagnostic System Check - Vehicle (Initial Inspection and Diagnostic Overview).
RENDER: 1.0x
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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.