Installation Procedure

IMPORTANT: Do not refinish previously painted sensors. Excess paint build up will cause the sensor to be inoperative.

Paint the new rear object sensor. Refer to Basecoat/Clearcoat Paint Systems in Paint/Coatings.
Check to make sure the paint does not exceed 6 mils. Use a paint thickness gauge suitable for non-ferrous metals. Refer to Paint Gages in Paint/Coatings.

Fig 1: Painting Rear Object Sensor Bezel

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Fig 2: Aligning Keyhole With Key

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Align the keyhole (2) with the key (1) and press the sensor bezel into the fascia.

Fig 3: View Of Rear Object Sensor Housing

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Install the housing to the bezel through the back side of the fascia. The housing snaps into the cutouts on the bezel.

IMPORTANT: The spring keys must be on the top and bottom of the housing.

Fig 4: View Of Spring & Housing

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Install the spring (1) to the housing (2) until fully seated.
Ensure the sensor is held to the bumper fascia firmly.

Fig 5: View Of Rear Object Sensor Assembly

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Install the decoupling ring (2) to the sensor (1).
Insert the sensor into the housing (4) with the connector pointing toward the passenger side of the fascia. The sensor tabs snap into the cutouts on the housing (4).

Fig 6: View Of Rear Object Sensor Electrical Connectors

Courtesy of GENERAL MOTORS CORP.