About a month ago my car would not start, I jumped it and it started and ran fine for about a month. Today it stalled again, my wife was driving she said it said "battery stabilizer system" as an issue....any thoughts?

Day time running lights come on during day but turn off at night. Headlights will not turn on at all.

beteween 50 to 55 its the worst i just picked it up from the dealer it only has 12000 miles and has been this way allthe time they had it a week this last time still no fix

My 04 denali has been great. I have 180,000 plus miles on it and bought it new. My problem with the air is that if I set it at a temp.( example - 73degrees ) it will blow nice cool air for awhile then all of a suden it will blow hot air. Very frusrtating when your on a trip and it 90degrees outside. If I stop the vehicle and shut it off, let it set for awhile and then restart it, it will blow cold again, then maybe ten minutes later we're getting toasted! Then a little later we're cool again.. Do I need to take it to a garage or is this an easy fix?

My engine coolant hot light has come on. What can I do to fix that problem? I love my truck and dont want to mess up the engine or anything like that. Any answers or suggestions to fix will greatly be appreciated it. Thanks Rob from Alabama.

one of my tires was low so i took it to the shop and they fixed it, but the check tire pressure light is still turning on, why, and how can i reset it since the tire is good know?

Front shocks need to be replaced @ 142000 miles. The dealer cost for parts are $930. I was trying to find instructions for replacement to effect some economies do the coil springs need to be compressed for instalation? Do you have to set the computer after instalation? Are the parts available from someone other than a dealer?

Air bag light blinks when truck is started, goes out for a minute then reilluminates steady. Is there a way of checking sensors?

my front differential is going can anyone give me a solution for this please

2005 Yukon Denali 6.0. Check Engine Light comes on. "OBD code P0496. Evaporative Emission System High Purge Flow" . I have replaced Gas Cap. Can clear error but eventually comes back on. Notice vehicle stutters to restart after shutting off to refuel. Where is purge valve located and any other thoughts?

Both back and front a/c is cooling to 80 degrees

when i try to put in a disc in the 5 disc box it just wont receive it

Six disc cd not working,no power.
Radio,nav working,

The front end of my 2004 Yukon Denali was makeing noise. Took the Denali to a GMC dealer and they said it was the front differential. It has been replaced once before when it was under warranty. Now its no longer under warranty and needs to be replaced again.

I beleive my vehichle needs a recharge because the fan(a/c) comes on, but it's just hot air instead of cool.

I can't get the rear tire pressure light to go off. It's been serviced and they don't know why it stays on.

Sometimes when Im driving the T/C light comes and the reduced engine power flashes and my truck will cut all the way but and it flashes stability traction. what do I do to fix the problem

46000 rear end went bad had to replace, never towed anything , what went wrong

while pulling travel trailer sometimes hear loud popping under denali can't tell where its coming from reciever hitch is bolted tight and appears sound

My reverse lights on my 1999 GMC Denali stay on while driving. How do you fix the problem, I know you can be pulled over by the police for this. So please help me if you can

If I take off hard, stop suddenly (even from idle speeds) and if hit speed bumps faster than I should, I can usually hear some kind of noise from the rear of my vehicle. It sounds like metal on metal. Not a grinding sound or clanking, just a single sound (a single clank, maybe). Like if you were to hit the exhaust pipe with a tool while under your vehicle I guess is the easiest way to describe it.

I replaced the shocks, as I noticed the rear would sag a bit when taking off. But that didn't fix the problem.

Ive heard tons of suggestions, but its just people guessing off the top of their head. Has anyone had this before? Or any suggestions?

where is the fuel filter and pvc valve located on my 2002 yukon denali?

my power steering went out and my fluid is full what could be the problem

Last night the instrument cluster in my 2005 GMC Yukon Denali very quickly flashed "Service Stability" and then the message went away. Kinda freaked me out a bit as I was driving 70mph down the highway. What does that mean?

when starting truck engine light came on steady. dissconnected battery for 5 minutes. reconnected and light went out but now can not get any airflow out of center ducts. a/c works fine in rear. a/c does work in defrost and floor mode. so no heat or a/c out of front center ducts. checked a/c fuses seem fine. pulled out climate control head and pulled out wiring harnesses every looked fine. reinstalled and no change. help me please.

Had radiator replaced 5/25/2010. On 6/24/2010, heard ticking in engine. Took to shop. They said internal damage occured. Cost to replace V8-350 5.7L $6000. I put quart of Slick 50 in engine. Noise stopped. On 7/2/2010, temperature guage started to fluctuate and smell of burning antifreeze from engine. Found radiator empty. Refilled radiator and reserve. Drove venicle for 2 days refilling with water as needed. Vehicle drove fine to me. Couldnt find leak. Checked oil dip stick. Oil looks like milk chocolate. Back of oil cap looks like butter. I think it might be intake manifold gasket leak. The vehicle has 154000 miles on it. What do you think? Any additional thoughts would be appreciated.

my headlights stay on 100% of the time. when the green daytime light indicator is on, i cannot use my bright lights. the green indicator has a malfunction and stays on 90% of the time, even at night. how do you disconnect or override that to manually turn your lights on instead of the sensor regulating it?

The daytime headlights and the low beam headlights will not come on. I have checked all low beam and daylight running light fuses and relays in the under hood fuse box, and they are ok.

My 2001 Yukon Denali won't go into reverse, what can be wrong with it? Aproximately how much will repairs cost? Will you recommend a repair shop in my area? Thank you, Tam.

When I turn on the car, the information center turns on, the date is the default date. I can not reset it. After a second or two, it goes dark and then nothing.... What can I do?