How do you repair back up parking sensor in 2003 Cadillac Seville?

To repair the backup parking sensor in a 2003 Cadillac Seville, first, check for any visible damage or debris on the sensor itself, which is usually located in the rear bumper. Inspect the wiring harness for loose connections or frayed wires. If the sensor is faulty, it may need to be replaced; this typically involves removing the bumper cover to access the sensor. After replacing, ensure the system is properly calibrated and test it to confirm functionality.