GMC Terrain: How the System Works - Ultrasonic Parking Assist - Object Detection Systems - Driving and Operating - GMC Terrain Owner's ManualGMC Terrain: How the System Works

URPA comes on automatically when the shift lever is moved into R (Reverse). A single tone sounds to indicate the system is working.

URPA operates only at speeds less than 8 km/h (5 mph).

An obstacle is indicated by audible beeps. The interval between the beeps becomes shorter as the vehicle gets closer to the obstacle. When the distance is less than 30 cm (12 in) the beeping is a continuous tone for five seconds.

To be detected, objects must be at least 20 cm (8 in) off the ground and below liftgate level. Objects must also be within 2.5 m (8 ft) from the rear bumper. The distance objects can be detected may be less during warmer or humid weather.

    Ultrasonic Parking Assist
    For vehicles with the Ultrasonic Rear Parking Assist (URPA) system, it assists the driver with parking and avoiding objects while in R (Reverse). URPA operates at speeds less than 8 km/h (5 mph), ...

    Turning the System On and Off
    The URPA system can be turned on and off using the infotainment system controls. See Vehicle Personalization on page 5‑33 for more information. When the system is off, PARK ASSIST OFF display ...

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