Yukon Denali AWD V8-6.2L (2007)
Parking Assist Control Module: Technical Service Bulletins
Parking Assist System - 'Park Assist Off' Message on DIC
Bulletin No.: 07-08-49-014A
Date: July 30, 2008
Diagnostic Information for Park Assist Off Message on Driver Information Center (DIC)
2007-2009 Cadillac Escalade Models
2007-2009 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2007-2009 GMC Sierra, Yukon Models
This bulletin is being revised to add the 2008 and 2009 model years. Please discard Corporate Bulletin Number 07-08-49-014 (Section 08 - Body and
Some customers may comment that a "Park Assist Off" message is appearing on the Driver Information center (DIC) at times.
There are several factors listed above that can cause this message to appear. A Tech 2 can be used to access the latest entry into the Park Assist Module
history buffer to help determine a cause.
Engineering has received multiple inhibited Rear park Assist Modules through warranty parts return with attached object stored in the latest history
buffer. If a vehicle has a trailer hitch installed into the trailer hitch receiver, it is possible for the rear park assist to be disabled. Once the trailer hitch is
removed, the message should go away. Other possible causes may be dirty sensors. Keep the rear bumper free of mud, dirt, snow, ice and slush.
Please note that any object that is installed in the receiver hitch, extending from the rear of the vehicle, or blocking the sensors can disable the
Parking Assist, resulting in the message "Park Assist Off". Please remove the object or obstruction from the vehicle to re-enable the system. This is
normal operation of the system.