Cadillac Buick GM Reverse Radar Sensor / Parking Sensor 84903588

This reverse radar probe directly replaces OEM 84903588 and also compatible with 0218000532; universal compatibility. Its function is to emit ultrasonic waves to detect rear obstacles, working with the control unit to alert the driver; helps gauge rear distance accurately. Fits Cadillac, Buick, GM vehicles such as ATS, XTS, LaCrosse, GL8. If the radar does not sound, false alerts occur, or it chirps continuously, the probe is aging; replace to restore sensitive detection and avoid backing collisions.