Removal Procedure

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: View Of Rear Object Sensor

Courtesy of GENERAL MOTORS CORP.

Remove rear bumper fascia. Refer to Rear Bumper Fascia Replacement (All Utility, Cadillac ESV) or Rear Bumper Fascia Replacement (Avalanche, Cadillac EXT) .
Disconnect electrical from the rear object sensor.
Lift the locking tabs on the housing and remove the rear object sensor.