2002 GMC Denali - Answered Questions & Fixed issues

I know this website www.reliable-store.com that i get manuals from, and they have all models online that solve all simple/technical problems like professionals I also brought for my 1989 BMW, such old model, they had it and it was very good manual. Go ahead, I bet.

Try to get the OBD code to tell you the problem. probably one of the ride height sensors located at each wheel.

no. purchas an adapter that will allow you to convert one of your XM channels to an AUX input.

Depending where noise is coming from its probably your brakes, but it is a gmc so dont rule out the rear end I’m happy to assist further over the phone at https://www.6ya.com/expert/josh_8f8ad0a8f7e0e6d3

Fuel level sender assembly most likely at fault. Recommend replace complete fuel pump module assembly . If you can, retrieve engine codes to confirm.

I have a 2002 Sierra Denali, and when it was only two years old, I began having the same issue that it sounds like you guys are describing. Luckily, I had opted for the extended warranty, because it turns out that the lube "specialists" at Wally-World had topped off my rear differential with standard rear-end oil. I turns out that the Denali's differential has a special "clutch pack", as they called it, that requires a secial, senthetic (aka: very expensive) lubricant. The **** WalMart added contaminated the diffy's oil, and caused the clutch pack to fail.... basically it started locking the rear axles, and not allowing one side to rotate at a different speed than the other, as is required in turning.
Well, it took the dealer nearly a month to acquire the neccesary parts for the repair, and as for the cost? Only a minimal deductible, and the dealer assured me that the $1800 extended warranty had paid for itself.... nearly twice!!!
WORDS OF ADVICE: If you own a Denali with AWS, Always instruct the lube guys not to touch your rear differntial! And have your certified GM mechanic check it at recommended intervals.

try this for me. roll the window down on the drivers side, close the door and push the lock button on the remote 2x and a chirp noise should be heard from the horns. now reach in and manually unlock the door[don't use the remote or power lock switch]and open the door. this is a test for factory alarms not aftermarket. the alarm should sound.

Have the battery charging system tested, you may have a failed alternator.

have it scanned and codes cleared

Without more info I would say check the fuse.

Please check the brake pads they may be worn out or the brake oil in the car is low ,please get it checked .......



Good luck...

It sounds like you have burnt out bulbs. All those other lights that you say work are all different bulbs. The tail light bulbs have dual filament so that they can perform the tail light and brake light function. You should change out your bulbs and that will probably solve your problem.

where does it located? verify your question, make it clear

it probalby is still engaged or not disengaging check trans actuators with a test light

you have a bad wheel bearing on the side making the noise.if you turn to lert the right bearing would make noise or visa versa.

no, just try to tension it just like before

Start with the simple and replace the fuel filter. The fuel filter may have reached the end of it's life time and is dirty causing the issues you have. The worst is the fuel pump it self has gone bad and needs to be replaced, the fuel pump should be producing 62 to 65 PSI when the engine is started and should drop no more then 5 PSI when the engine is running. You can check the fuel pressure at the shredder valve with a fuel pressure gauge. Good luck and keep me posted, be glad to help get your Yukon running 100% again.

need more infor.but if it only does it then stopping u may need need a new egr valve. common

Its located on the fuel rail. on the right or left side of the engine.

if it was me i would give these peoples a call they only sells GM parts only and the name is Schram auto & truck parts #1800-292-1032 and maybe they can help you with repairs or replacement of your unit.