Service Bulletin: Information and Additional Diagnostics on “Park Assist Blocked See Owner’s Manual” Message for 2010-2013 Cadillac Escalade, Chevrolet Avalanche, Silverado, Suburban, Tahoe, GMC Sierra, and Yukon Models Equipped with Rear Parking Assist (RPO UDZ)

This service bulletin provides information and additional diagnostics for the “Park Assist Blocked See Owner’s Manual” message displayed on the Driver Information Center (DIC) of 2010-2013 Cadillac Escalade, Chevrolet Avalanche, Silverado, Suburban, Tahoe, GMC Sierra, and Yukon models equipped with Rear Parking Assist (RPO UDZ).

The message is displayed when the parking assist system detects an obstacle or object behind the vehicle. The system comprises four object alarm sensors located in the rear bumper and operates at speeds less than 8 km/h (5 mph) to assist the driver with parking and avoiding objects.

The diagnostic process involves checking for DTCs, reviewing Park Assist Disable History Parameters, and addressing specific issues such as dirty or frozen sensors, attached objects, or sensor ring times.

Careful inspection and maintenance are crucial to ensure the proper functioning of the parking assist system. It is essential to always verify the tailgate is closed when using Park Assist or turn it off when driving with the tailgate lowered.

Manual:

Download: Service Bulletin: Information and Additional Diagnostics on “Park Assist Blocked See Owner’s Manual” Message for 2010-2013 Cadillac Escalade, Chevrolet Avalanche, Silverado, Suburban, Tahoe, GMC Sierra, and Yukon Models Equipped with Rear Parking Assist (RPO UDZ)

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