2005 Chevrolet Impala LSFACTORY OEM SERVICE PROCEDURE

Rear Object Sensor Housing Replacement: Procedure

WARNING: This page is about a different car, the 2006 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove the rear fascia. Refer to Rear Bumper Fascia Replacement .
    2. Fig 1: View Of Rear Object Sensor
    GM1699865Courtesy of GENERAL MOTORS CORP.
  2. Disconnect the sensor harness.
  3. Remove the sensor from the sensor housing.
    4. IMPORTANT: Do not refinish previously painted sensors. Excessive paint build up will cause the sensor to be inoperative.
  4. Paint the new sensor. Refer to Basecoat/Clearcoat Paint Systems
  5. Inspect the paint thickness to ensure it does not exceed 6 mm using a paint thickness gauge suitable for non-ferrous metals. Refer to Paint Gages
    6. Fig 2: Sanding/Grinding Sonic Weld Plastic Residue From Fascia
    GM1699859Courtesy of GENERAL MOTORS CORP.
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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.

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