GMC Yukon Denali Questions

Get answers to questions about your GMC Yukon Denali at RepairPal. Find solutions, diagnose problems and get back on the road.

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It lasts about 3 months.

It seems to happen when a/c on?

worried about ffuel mileage

My gas tank suddenly has become very slow to fill when refueling. I was told that it is likely a stuck tank vent valve.

Just stopped opening one day. Took it to the dealership and had disagnostic test done- showed nothing was wrong. Fuses were checked with no issues. The dealership said they would replace the entire back door locks for $500, but still couldn't guarantee that it would solve the problem. What else can i do?

Can you explain how to fix the suspension system ?

There is no temp sender on this vehicle. Is the engine temp mechanical controlled thru the BCM or PCM? All other gauges work fine and there is no CEL on. It does have the temp sensor at the front of the left head. I know a BCM replacement requires work with a TECH II scanner and online with GM and about $800 at the dealer. Thank you for any input.

I have a 1999 Denali and the headlights come on during the day, but at night they shut off.

Code indicates electronic front end sensor fault

air ride control system light is on

Been taving problems with loss of power at certain times while driving.

I have a knocking noise at take off and as slowing down. It sounds like the rear end to me, but wanted to see if anyone had any other ideas (trans or transfer case).

I recently went to dealer to pick up a door lock actuator for the passenger side front door. It had only two electrical connections on it instead of three that is on my vehicle. The third electrical connector is for a plunger is what I was told and that he wasn't sure if it was needed. Does anyone actually know if it is needed or can I use the actuator with 2 electrical connections? Also what is the purpose of the plunger?

My 1999 yukon Denali pops and clunks when its cold and also shutters like its going to shut off, but it stops after I gun it and it warms up plus there is a smell like burning or somthing. I have greased slip yoke, removed fuses(T-Case, 4wd and cruse control fuse) trying to trace the problem. Starting to get really tried of this thing, think i may just run over it with my lifted Ford F-350. My sister had the transmission replaced about a year ago while she owned it, and thats why i cant figure out what the deal is. It throws the check engine light on, but after it smooths out the engine light goes off. Think i covered it all, please any help would be greatly appreciated. Thanks

it shut off when i shut eng down
fuse was ok

The electrical problem happens occasionally.Had the alternator replaced, still having problems.Battery is good. Yesterday the problem escalated to lights flickering, power door locks went up and down and I even loss engine acceleration for a brief moment. I keep taking it in and they can't repeat it on demand so mechanics don't know what is wrong. Help!

Do you have a oart # for what needs to be replaced for PO496?

I have not checked the manual yet, but assume it may be her tire pressure light. Can you confirm?

the light stay on but dont go out

Now its more frequent the left directional is going into hazard instead of directional. I sometimes have to play with the handle in order to get it back.

I would have to play with the handle in order for it to get back to the it should work.

wont clear inspection

when i start the truck,this message appears and i hit the arrow on the steering wheel to remove it

My 2005 yukon rear window wiper will sometime go up about a foot and other times it dosent work at all. It will always go down once it comes up.

it also has a hard time going past 60 mph and issues with shifting

Driving down the street when my Denali's back wheels locked up made me swerved to on coming traffic and vehicle wont go forward or backwords. The back wheels are completely locked.

key on,engine light works.engine running light stays off.engine off and on immediately engine light will not come on for bulb check.if key is left off for about 10 seconds,and turned back to on position ,the engine light it a problem or normal for this general motors vehicle?

i would like to know how much it would cost to replace all 6 airbags because my denali was in accident.

the line runs from the front to the back of the truck

when starting auto rear hatch door alarm is shown. can reset on steering wheel but that only clears alarm for now.
where is sensor or how can i bypass it