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GMC Yukon and Yukon Denali Problems



  • rigatonirigatoni Posts: 2
    What was the final resolution to your problem? I have an 02 Denali and just started to have the same problem with the lowbeams not working. They were fine until I switched to highbeams, then when I switched back the lowbeams didn't work. I ended up using the fog lamps to get home. I had changed the bulbs a couple of months ago and they were still good. Not sure what to do next and definitely don't want to go to the dealer for this. It's like an invitation to get raked over the coals!
  • ted5151ted5151 Posts: 1
    My Denali is a 1999 with a 5.7 liter, and 120,000 miles.

    The intake manifold gasket (LOWER) :confuse: needs to be replaced , as I am leaking anti freeze, and have slight concern it will get into oil.

    I check oil level 3 times a week, but it does not show level increasing.

    The GM dealer has provide a quote to fix lower intake gasket, but also mentioned valve cover gaskets, in checking with GM parts department, they show bolts to intake manifold can be reached without taking off valve covers.

    My questions are: Can intake manifold be taken of without removing valve covers?

    Should I have any concerns due to age 10 years, that other parts, will be broken or damaged, with this service job.

    There sure is a lot of hoses and tubes, in the way of intake access.

    Thanks in advance for all replys.

    The Denali is due to go in for this service on Monday Aug 11/08, so a quick reply would ba appriecated
  • 40 psi is the max that the tire can handle 32 psi gets a good ride
  • I have a 2005 Yukon XL that is making a whining noise as you accelerate and the oil pressure gauge jumps up as well. Dealer has had twice and can't fix. Any suggestions
  • Lately, after sitting for awhile, the red security light in the center console is blinking and clicking rapidly, and the electrical system is dead. It will not start without a charge. It only takes a couple of minutes to recharge it, so the battery is not dead. This has happened 3 times intermittently in the past couple of weeks. I have check all fuses, and they are good. What is going on? Thanks.
  • I have found that changing the command on the computor helps for a short while but remedy is still a mystery. I have also changed the relay but no help.
  • :lemon: I have a 2008 yukon denali. I have had nothing but trouble with this vehicle, starting with the xm module, then interior issues, then replaced the steering shift boot, then replaced the instrument cluster, then had to replace the fuse block inside the dash board on the drivers side. Now the battery keeps dying. I only drive it on weekends and have taken it to the dealership 3x for this problem . They can't figure out the problem. They have had it on monitors and say it is drawing the correct amp when it is supposed. I asked if it was the battery, but they said it was fine, and should start after sitting for 4 to 5 days. The problem is when I go to start it the battery is dead. I mean completely dead, no interior lights liftgate won't open. Nothing doing. Any ideas out there??? I am so upset at this vehicle I can't see straight. The good news is it is a lemon and I have a lawsuit against gmc. The bad news is I have to deal with this piece of crap until the trail date. :lemon: :mad:
  • skytop1skytop1 Posts: 106
    After 3 weeks new, this prestigeous amalgamation of tin broke down and had to be towed to the dealer. Never mind that the battery was so dead that the highly vaulted OnStar failed to work! I had to use my cell phone to call for a tow.
    The dealer took two days to figure out that the battery was allegedly the cause of the problem. Mind you, the vehicle is only 3 weeks old.
    Now my Denali bucks and shakes in the morning, shutters when shifting, rattles and drives like an old truck. Will I ever ever, ever buy another GM car or truck. '
    Ha ha ha haaaa haaa. I will celebrate when GM finally goes bust. Today its stock was at about $4. and it's corporate paper was downgraded to PURE JUNK value. Just like their vehicles.
  • I have a 2005 Yukon Denali. When I stop at a light and then push the gas the truck stops and shows "traction active" on my dash. There are no service engine soon lights on the dash either. It stops the truck and I have to take my foot off the gas pedal and then push it again and then it will move. The truck doesn't shut off all power it just stops like I stepped on the brakes. It does this everytime I stop and go. Also, it will sometimes go if you don't take your foot off the pedal but it moves slow and shifts really hard. What is going on with this truck? Does anyone have any Ideas?
  • The last attempt to solve the issue with the doors not unlocking was to change the lock relay. I have not had a issue since was changed two weeks
  • Well I bought a used 2007 Denali a month ago and it was raining when I bought it so i never checked to see if the sunroof worked. Well you guesed it , it does'nt. I checked the fuse and its fine. Anyone know anything else to try?? I can't take it to the dealership I bought it from I live in Michigan and i flew to Georgia to buy it so thats out of the question.. HELP>>>>>>>> :mad:
  • I Have a 01 Yukon Denali Vortec 6000 and i have electrical problems, when im on a stop sign the all the light start going down and then if i do a turn and its slow it looses power and just turns off, the engine dosent sputter, once the engine turns off i put in on park and start it, it will start right back up. I have Checked the Altenator and the Battery and they are all in good shape. I am wondering what can be the cause of this problem.
  • This just starting happening to my 2004 Yukon Denali. But prior to this I had a different message, "service stability" and the ABS and Traction Off lights went on. I believe these are connected but not sure. A chevy dealership service department told me I had to replace the hub and bearing on a front wheel (w/o looking at it, just told them what it was doing). Buyt they were not sure about the loss of power when accelerating and the "traction active" message. Your post is older so I assume you already have gotten it fixed, if so maybe you could tell me what you had done. thanks.
  • Here's the answer to my problem as explained to me by my mechanic. The multi-function switch that sits in the steering column controls the turn signals, hi/low beams, wiper/washer and cruise control. When you switch between high and low beam one circuit opens, the other circuit closes. The fault occurred on the low beam side and would not ground when I switched back to low beams from high. My mechanic was able to fix the ground problem by cutting the ground wire that ran from each headlamp back to the multi-function switch and grounded them directly to the frame. No doubt GM wouldn't approve of this fix but I wasn't about to pay $250+ for a new switch plus labor.
  • The traction activation light keeps coming on and the motor powers down and wont go. The dealer has been no help we put a new transmission in and it still does it. Can you help?
  • Did anyone ever give you an answer? We have the smae problem! Appreciate any help
  • We have had this same issue on our 2004 since about 20,000 miles now we have 47,000, finally got GMC involved after many times of taking it into the dealership. Last week they replaced a wheel sensor, but now we are getting all sorts of messages coming up like the ABS light, Service Stability and the traction control off light comes on. Anybody else have these same issues?
  • Battery drain caused by new pump for autoride system staying on even when key removed. Checked relay - works fine. Now looking for diagnostic on controller. Bypassed system and pump works fine with shock leveling on demand.

    Anybody got any suggestions other than Mr. Gut Wrench?
  • Did you ever solve the traction activation issue?
  • skytop1skytop1 Posts: 106
    GM is now offering a whopping $8000. instant rebate and ZERO percent financing on new Yukons. Sounds good? Think again. GM has reduced the value of your SUV by at least $8000. or more. They have also severely reduced the public's perceived value of their product. GM products are being seen as shoddy and value challenged. GM is deliberately canabilizing their own customer base and destroying resale value of all GM products. All GM vehicle owners are losers now since your auto investment has fizzled. This is how GM is going to run their business even after the morons in congress give 15 BILLION dollars to this out of control auto company. GM does not have a clue but they know how to hurt their customers big time.
    Make sure you patronize GM because they don't give a damn about YOU.
  • Did you ever find out what was causing the traction activation issue? I have the same issue, driving down interstate, traction light came on, reduced engine power?
  • I haven't..It just stop doing it.
  • found it out. the accelerator pedal position sensor had a bad connection. i unpluged it and plugged it back in and truck runs just like new. also got error code p2138 just in case it happens again save ur money and look for loose connections on any wire connection. GOOD LUCK. im glad i had friends in good places.
  • I had this problem this past spring and the dealer told me he had to reprogram the transmission. It went away and ran great till about 2 weeks ago and the same problems arose. I'll try looking for the pedal position sensor. Where is this sensor located? Wish me luck
  • the sensor is located on the foot pedal itself. u cant miss it u can see the wires running off of it. if the engine light stays on after its fixed, disconnect the battery and it will reset itself. DO NOT PAY FOR THIS, IT CAN BE DONE WITHOUT BEING HOOKED UP TO MACHINE!!! dealers dont know [non-permissible content removed] are nothing but ripped off artist.
  • Thanks, I'll try it tomorrow. I'll give you feed back after it's done
  • I am having the exact same problem and my delaer cannot find this document. Can you please verify the document number or let me know what dealership you went to so they can call? This is very frustrating.
  • After repalcing two relays and other BS we have determined that the body control module that the autoride suspension pump is controlled by needs reseting. Is this a dealer only procedure or can I do it myself without going to Mr. GUTWRENCH!
  • I aslo have the same problem with my 2003 Denali. Dealer and others can't figure it out. Have they fixed yours yet?
  • I have a 2007 Sierra Denali and the heater blower quit, any idea why?
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