2009 GMC Yukon - Answered Questions & Fixed issues

{: ) The driver information center (DIC) displays SERVICE PARK ASSIST when the object alarm module detects a malfunction in the parking assist system and the system is disabled. The DIC also displays SERVICE PARK ASSIST when a loss of communication occurs with the object alarm module. Usually this is caused by faulty components or wirings. Better visit your dealer if still under warranty, for one park assist sensor only costs too much. If your bumper had been knocked off or had previous repairs outside the dealership, that's another thing.
The PARK ASSIST OFF message is displayed in the DIC when the parking assist system is disabled due to conditions that disable or inhibit the system. The object alarm module requests the DIC display PARK ASSIST OFF when it detects one of the following conditions:
• The parking assist system is manually disabled using the driver information center (DIC). • An object is attached to the rear of the vehicle, such as a trailer, bicycle rack, trailer hitch receiver, or tow bar. • The object alarm sensors are covered by snow, mud, dirt, slush, or ice. • The vehicle bumper is damaged, • Excessive paint thickness on a replacement object alarm sensor. • The object alarm sensors are disrupted by vibrations, like those caused by a large nearby vehicle or from heavy equipment such as a jackhammer.

I suggest you get one of those manuals people get nowadays to do it yourself.. My nephew use it to repair my car and it's totally repaired now. Here's the website he bought it from. www.reliable-store.com

Go to online store reliable they have repair manuals I am sure you will get the solution. Here's the link Yukon 2007 2009 Workshop Service repair manual

You need new door struts, they look like mini shock absorbers https://i.ytimg.com/vi/9QU4_JrRWU0/hqdefault.jpg

Probably you have a blend air door failing to operate. These are controlled by vacuum on most systems, so you could have a vacuum leak to that door actuator, or a bad actuator. he bad news is, these devices are usually located way up under the dash such that they may be very hard to access. Unless you are comfortable taking much of under dash apart, might be a job for the dealer.

I had the same thing happen and one of the rocker arms didn't have the oil hole in it, changed it and works great.

You need to keep your Bluetooth device charged. The Bluetooth should start working.

have the OBD codes read , sounds like fuel but the OBD will tell which sensor/switch is at fault

Low AC Fluid

go to www.autoelectronico.com and translate the web with your browser and fix it.God bless you

I would check the distruibtor bushing.If you pull the dist. cap the rotor should have NO side to side play.Pretty common for the top bushing to wear out ,making thereluctor wheel hit the magnet ,when they first start to get looseit will be interrmittent but will get worse.Just a thought.

I do believe this has to be reset by the dealer

If you are using a DVD player in a different country to the one you purchased it in, then you may have issues reading a disk from a different zone.There is a region code on this webpage:http://en.wikipedia.org/wiki/DVD_region_code

The problem is caused by a problem with the fuel vapor recovery system (known as the "EVAP" system) of the filler neck, it will require special testing to repair it.

Replace the blower motor.

could be the particulated filter

clutch input for sound on power circuit is faulty in this radio. replace this radio with a used one or a dealer installed one.
the vin must be flashed into the radio to work if replaced

That's not a good sign. I would try to have it repaired or replaced under warranty.

there should be a menu of settings for that. your owners manual will show you how to access and make changes.

you probly have a vaccum leak check to see if tight or look for a pinched vaccum line i have done that my self