GM Park Assist Isn't Much Help

July 5, 2022

The park assist feature of some 2009 GM models — including Buicks, Cadillacs, Chevys, GMCs and the Saturn Outlook  — may not be operative, and the vehicles may be showing messages that indicate a problem.

Some owners of 2009 Buick Enclave; Cadillac Escalade, Escalade ESV, Escalade EXT; Chevy Avalanche, Silverado, Suburban, Tahoe, Traverse; GMC Acadia, Sierra, Yukon, Yukon Denali, Yukon XL, Yukon Denali XL; or Saturn Outlook vehicles may comment that the rear parking assist system is inoperative. They may also state that either “Park Assist Off” or “Service Park Assist” messages may be displayed.

If this is encountered, perform diagnosis using either the Parking Assist System Malfunction or the specific DTC based on the diagnostic system check in SI. It may be helpful to reference PIT4828 (Park Assist Off) Message on DIC.

Important: If the sensor is removed, please note the position of the sensor alignment marks as shown in the photos here.

Sponsored Recommendations

IA900WA Single System & Workflow: Wheel Alignment & ADAS Calibration

Sign in. Your browser can't play this video.. Learn more. 0:00 / 39:04. IA900WA Single System & Workflow: Wheel Alignment & ADAS Calibration | Autel. 50.6…

Voice Your Opinion!

To join the conversation, and become an exclusive member of Vehicle Service Pros, create an account today!