When the System Does Not Seem to Work Properly

The following messages may be displayed on the DIC:

SERVICE PARKING ASSIST: If this message occurs, take the vehicle to your dealer to repair the system.

PARK ASSIST OFF: If the URPA system does not activate due to a temporary condition, the message displays on the DIC. This can occur under the following conditions:

○ The driver has disabled the system.
○ The ultrasonic sensors are not clean. Keep the vehicle's rear bumper free of mud, dirt, snow, ice, and slush. For cleaning instructions, see Exterior Care on page 10‑83.
○ The park assist sensors are covered by frost or ice. Frost or ice can form around and behind the sensors and may not always be seen; this can occur after washing the vehicle in cold weather. The message may not clear until the frost or ice has melted.
○ A trailer was attached to the vehicle, or an object was hanging out of the liftgate during the last drive cycle. Once the object is removed, URPA will return to normal operation. . A tow bar is attached to the vehicle.
○ The bumper is damaged. Take the vehicle to your dealer to repair the system.
○ Other conditions, such as vibrations from a jackhammer or the compression of air brakes on a very large truck, are affecting system performance.

    See also:

    Calling for Assistance
    When calling Roadside Assistance, have the following information ready: • Your name, home address, and home telephone number • Telephone number of your location • Location of the vehicle • ...

    Roadside Assistance Program
    As the owner of a new GMC, you are automatically enrolled in the Roadside Assistance program. See Roadside Assistance Program (U.S. and Canada) on page 13‑7 or Roadside Assistance Program (M ...

    Cleaning the Display
    Notice: Using abrasive cleaners when cleaning glass surfaces could scratch the glass. Use only a soft cloth and do not spray cleaner directly on the system as it could affect the mechanical parts. ...