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GMC Yukon XL and Yukon XL Denali



  • As indicated by "ahightower" I have answered many questions on this "air temperature sensor" in a variety of messages on the "Chevy Tahoe (SUV)" board in messages #'s between 5563 - 5608. Rather than repeat everything again, check those out first. If you still have any questions, just ask on either board, as I read both. You are correct that it is a small fan & is part of the automatic climate control system.

    My truck is a 01 YXL. If your truck is still within 3 yrs / 36K, you should be covered by warranty.

    Good Luck,
  • yukeyuke Posts: 3
    I've found a place that has great prices. Molded or flat pieces.

    Nice people and great prices.
  • yukeyuke Posts: 3
    This is the one I prefer ( link below ). Vizualogic makes a monitor ( color choices to match your trim ) that will affix to the inside windshield trim just to the right of the rear view mirror that looks great or there are many options for the monitor. I like this camera because the height will give you a better view and it's out of the way of the rear bumper stuff.

  • We have a 2002 Yukon XL we bought new and has given us problems since day one. First it was the brakes which would grab on one side intermittently and cause the front to shimmy and shake right up through the steering wheel. Then the air conditioner wouldn't cool when stopped at a light or parked idling unless you revved the engine. Then one of the white daytime running lights burnt out (it seems two out of three you meet on the road are also burnt out. Now in the last couple months we've had to spend over $2,000. first on a new air conditioner compressor which just blew apart and then an entire new rear hatch/door because one of the hinges broke and the door almost fell off into traffic. This car has never been in a wreck and always kept in the garage. Anyone else have these probs? :lemon:
  • ahightowerahightower TXPosts: 539
    Isn't the Beast handsome when it's all clean and shiny? Black is a pain to keep clean, but it sure looks good when it is! I've found that Mr. Clean Auto-Dry does work very well as long as you don't let it dry before that final rinse, and have a fresh filter cartridge. I got some inexpensive leather wipes that tend to leave the seats kind of shiny and squeaky, without really getting all the dirt out. I think I will go and buy some of the Maguiar's stuff and see if that is better.

    About 4,000 miles on the clock and we are still very happy. Gas mileage has improved from the high 15's to the high 17's. I guess the engine has broken in, and also we are driving judiciously and keep the tires at 33-34 psi. Going to San Antonio in a few weeks, looking forward to another road trip. Oil life monitor says we have 50% left, how cool is that! That's like a free tank of gas every 3,000 miles that I won't change the oil! Automatic climate control and power adjustable pedals are very cool too. And it handles very well for its size. This is my favorite vehicle I have owned so far, much more enjoyable than the minivan it replaced.

  • Hi,

    Well, that a whole new bunch of problems we haven't had, knock on wood. We have problems with the knocking sound when you start the engine, stalling at odd times, oil use about a quart per month, and a grinding sound when you turn left or right and a high pitched sound that I can't identify but sounds like power steering but isn't. Has that made your day? I love the SUV but get no help from GMC. Nice polite replies though. Have you had any of our problems?
  • My 04 Yukon XL (which I really like) is behaving badly... When I take my foot off the gas pedal to press the brake it suddenly just revvs up like someone has slammed the gas to the floor. It's happened a few times - almost got me into a couple of accidents (had to stand on the brakes to stop!!) - and when I took it to the dealer they hooked it up to their computer and said that it showed nothing wrong. "No code problems..."

    My wife won't ride in it anymore... Is this happening to anyone else??
  • I have regular yukon and want to make it look like an denali yukon EXactly what parts do I need thanks
  • Has anyone had transmission problems with their 2002 Yukon? I've burned 2 transmission! one at 35k and another at 77K. I dropped it off at the dealer and I figure it's worth a fight to get them to replace it. I don't think I have much of a chance. Are there any resources out there to help me out. I figure it will cost around 3K or so.
  • I have the same problem in starting, it cranks but is hard to start, then smells flooded. It starts fine in the morning when cold. 2000 Yukon XL, 97,000 miles.

    Please let me know what was causing your problem. The GMC place can't find my problem.

    Vernis Stanaland
    Tyler, Texas
  • We have a 2005 YXL with captains chairs front and middle (room for 4).
    We have the 3rd row rear bench seat that is either up or down. Unfortunately, with 5 passengers, we can't have the seat down when we need more space in the rear.

    Does anyone know of an aftermarket conversion that will allow a Split 3rd row seat in the XL? The Yukon has the split seat option for the 3rd row, why not the Yukon XL?

  • eml56eml56 Posts: 1
  • tdohtdoh Posts: 298
    Assuming that you're talking about the '01+ generation Yukon, here's a non-inclusive list:

    -Replace entire front bumper assembly
    -Replace front grill
    -Replace side lower assist steps
    -Replace rear bumper
    -Replace chrome side door moldings with color-keyed Denali one
    -Replace headlight/front turn signal/foglight housings (and appropriate bulbs as well--e.g., Denali low beam uses 9005 instead of 9006)
    -Add Denali front/rear mud flap moldings (they're not really mud flaps but look at a Denali and you'll see what I'm referring to)
    -Add Denali lettering to sides of vehicle

    There may be a few other things I left out (e.g., if your side mirrors don't have the motorized fold in/out option and/or no puddle lights, you'll need to replace those too, although you may need some additional stuff in order to get the mirrors to fold in/out by themselves) but I think the above covers most of the major stuff...and that's just for the exterior--the interior of course is a whole different story.

    I assume you're probably gonna try to find these parts at a junkyard or something 'cuz the cost for all of the above stuff brand-new ain't cheap...IOW you'd almost be better off just buying a Denali instead of trying to cosmetically change your Yukon into one.
  • Just bought a New 05 Yukon XL (1/2 ton). We have it about 10 days and the Odometer is less than 500 miles. We have noticed a weird sound underneath the car soon after taking delivery. What happened is that when we parked our car in the garage and back out, shift into drive, step on the gas pedal, within 5 to 10 seconds, there is a grinding sound coming from the front of the car for about half second and it is gone. It only happens on the first circle and the rest of the driving is OK. But it happens everytime I back and drive. I took the car to the dealership, they had three technicians look at it and none of then could find the cause of the problem. Finally, they tested another 05 XL and they claimed that that car makes the same noise.
    I went there I test-drove it and it did make the same buzz noise.
    They then told me that it is totally normal for 05 XL! I don't beleive them and then I come here to see whether there are 05 XL owners who have the same problem. Thank you and Merry Cristmas!
  • ahightowerahightower TXPosts: 539
    Congratulations. We got our 2005 in August.

    I can't say I've had that problem. At least they could recreate it on another vehicle. Do you have 2WD or 4WD? Is this happening on dry pavement? Is it while turning or pointed straight? If you park and then go into drive again does it happen, or only after you've gone from Reverse to Drive?

    I guess mine makes a little bit of a noise when the steering wheel is totally locked to one side or another, but not when going straight that I've noticed. I'll try again and pay attention today.
  • guguigugui Posts: 1
    I own a 97 gmc suburban and at first i experience a intake gasket leak. at about 102,000 mile then as i got back from vacation in connecticut threw a rod $2000.00 rebuilt engine.
    I use mobile 1 synthetic oil also. My co work has a 97 yukon He was just told he had bad barren he has 107,000 he as change his oil as manufacture recommended.
  • I have a 2004 Yukon XL Denali with a Navigation System. Has there been an up date to the Navigation Disk? If so, where can one be purchased?
  • Wow!! I own a 2002 Yukon Denali XL and the transmission went out at 44K miles. It cost me $4,600. The second trans started acting up again after about 79K miles, but hasn't quit yet. I really thought that I was the only one with this problem. I had no idea it was this widespread. If you find anyone to help, please let me know about it.
  • Hello,

    I went for a test drive last night in an 06 YXL Denali. All of us in the vehicle (me, my son, and the salesman), noticed that upon getting onto the freeway, the vehicle ride had a very noticeable and rhythmic bounciness to it. I had previously test driven both a regular Yukon Denali and a different YXL Denali on surface streets only, and there was no bounciness to either. So this was a new experience.

    I called my Dad, who's been a round quite a while (70+), and he said that GM truck frames with long wheel bases are known for having that bounciness to them on concrete freeways. He said that if you have it all loaded down with a full tank, gear, and perhaps a trailer, it goes away. He also said that if you drive it on a blacktop highway/freeway, instead of concrete, the rhythmic bounciness does not occur.

    Have any of you experienced this? I tried searching on "bounc" (to catch all forms of the word), and didn't find anything with any answers.

    Is there a way of cancelling this bounciness out using any features of the YXL Denali, such as AutoRide? Is that something that needs to be activated? Or is AutoRide always on?

    Unfortunately the salesman was absolutely clueless about the Yukon and YXL Denali features. Didn't even know how to use the Navigation, so he couldn't show me its various capabilities. I'll need to find a different dealer.

    I like the extra cargo space available in the YXL Denali, and I wanted to give it serious consideration, but that rhythmic bouncing really bothered me. I want to be able to take it on various excursions with or without a trailer and have a comfortable ride.

    Please let me know if you have any ideas.

    By the way...what's the story on using snow cables (not chains, but cables) with the 20" rims/tires on the Denalis? Any issues?

    Thanks for any assistance you may be able to provide.

  • Mine is a 2WD. It happens whenever I start the car and speed up to about 20m/h (It even happens when directly moving to D, not just reverse and then move to Drive as I tested). You have to be very careful to be able to hear the buzz noise and keep your car quite, no radio or CD. When you hear it the first time, you will hear it again thereafter even if you turn on the radio. The technician in the dealership said it is some kind of relay noise. It sounds like a releasing of compressed air.
  • Well, it must have been either a bad XL suspension, or a bad section of freeway. I took another Yukon XL Denali on a test drive today on the freeway (2 of them actually), and they faired much better. I think I just need to get used to the stiffer suspension of these large SUVs, since I'm used to minivans and sedans.


  • I'll most likely be purchasing a Denali or XL Denali in the next day or two (looking like XL Denali at this point). I've researched other postings on wheel size and have come to the conclusion that going with the 20" rims/tires is asking for trouble when doing any sort of off roading (I'm just talking unpaved dirt roads, nothing crazy), as well as having more flexibility with snow cables, and handling pot holes without damaging the rims. So, I'll stick with the 17" stock wheels/tires for the purchase.

    However, I'm still interested in getting an upgraded wheel/tire via aftermarket that upgrades the look, and that can still handle the unpaved roads, snow cables, pot holes, etc.

    Has anyone found a comprise along the lines of an 18" custom wheel/tire rig? If so, is there a good online vendor that you could point me to? I live in Southern California, so I imagine there may be several outfits down here I can visit, but it would be great if I could at least see an online catalog to choose from.

    Any help is appreciated.


  • stakeoutstakeout Posts: 173
    have an '04 burban 4wd .. same noise after initial startup .. pull away and 5-10 seconds there it is... I believe that noise is the Stabilitrak system kicking on.. our older '01 burbans.. both mine and my wife's without Stabilitrak didn't do that...
  • Well, I took the leap and purchased an 06 YXL Denali with all the options (NAV, RES, Sunroof, buckets). Very excited!

    Regarding break in of the vehicle. Just how important is it to not go over 55 mph, and to not shift down, during the first 500 miles? I'm fairly certain that both of those things have already happened just in the course of the dealer transferring the vehicle from another dealer. The freeways here in Southern California have everyone driving at high speeds (70+), and I'm willing to bet that whoever drove it down could have easily used engine braking at some point. The vehicle had about 100 miles on it when I took delivery.

    Regarding the topic of being towed. The manual clearly states that the vehicle cannot be towed, otherwise the drive train will be damaged! Now, given that every vehicle I've ever owned has been towed at one time or another, I just want to make sure I understand what they mean by towing. The manual talks about the fact that the wheels cannot touch the ground while being towed. So, that means towing the vehicle should always be done via a flat bed truck. I'm ok with that.

    However, what about just moving the vehicle at slow speeds, such as when getting it up on the flat bed?

    Or what about pushing it out of my driveway to jump start it?

    What about getting pulled out of the snow or mud via the recovery hooks?

    I guess I need to make absolutely sure that the vehicle never "coasts" in neutral at more than a walking pace.

    Sorry if the questions seem silly. I've never owned an AWD (or even a 4WD), and I'm excited about using it for family treks to mountains, snow, trails, and good old road trips. I want to make sure I make the thing last and keep it working well.

    Anyway...any info you have is appreciated. I'm also going to call the dealer and see what the service guys have to say.


  • Yes, my car does have stabilitrak and your explannation sounds reasonable. Will other Yukon XL owner share your ideals?
  • I'm interested in bumping up the height of my new DXL a few inches, just so that I can get some better ground clearance for the occasional trails that have some deep dips, as we make our way with the bike rack (with 4 bikes) on the back.

    Has anyone here done anything like that? I've done a little research on it, and it appears that full blown suspension lift kits aren't available due to the autoride (nor would I necessarily want such a major modification). I've heard of something called a "body lift", not sure about the difference.

    Any insight is appreciated.


  • tdohtdoh Posts: 298
    I think the nav disc version is currently (last time I checked) at 4.1; where one can be purchased depends on how much you're willing to pay for it. Unless you have a nice business relationship with the parts and/or sales manager at your favorite GMC dealership, you will need to shell out quite a few bills for the disc if bought at a dealership. Ebay is probably your best bet if price is an issue...
  • tdohtdoh Posts: 298
    I can't offer an opinion as to how good a compromise 18" wheels/tires will be for off-roading/snow/etc. since I've never tried them out; I guess it would sorta depend on how aggressive you'll drive your vehicle under those types of road conditions--e.g., really rocky roads, deep snow drifts, etc.

    FWIW--I'm running 22" wheels/tires on my DXL and for the most part, try to avoid road conditions that are really adverse for those sized shoes. However--I have driven on snow-covered roads (2-3 inches deep) and on fairly-rugged (i.e., no large rocks to drive over) dirt roads on my 22's w/o any problems...of course, I do drive a bit more conservatively than I probably would if I were running on the stockers. Potholes--well, I know I'm taking my chances in that regard--but as with any kind of choice, there will always be compromises.

    Just my opinion, but 18" is not much of a compromise if "big-wheel" look is part of the equation since there isn't much of a perceptible difference from going up only 1" in size. I think that as long as you drive a bit more conservatively under such road conditions, 20" is a much better compromise in both looks (size-wise) and performance. OTOH--since you mentioned about the possible need for using snow cables...I guess it would be a bit difficult to find cables for 20" tires although I would imagine that it might only be a matter of time before some manufacturer starts offering them, what with the increased proliferation of big wheels/tires being offered these days.
  • tdohtdoh Posts: 298
    Congrats from one DXL owner to another on your purchase--I'm sure you'll enjoy driving it! If you're one of those types who are open to trying to get more power out of your DXL, you might want to consider a custom PCM tune...I did and it's the best bang-for-the-buck aftermarket performance add-on I've ever purchased for my truck.

    About the vehicle towing issue--the AWD system on the Denali cannot be put in neutral (I'm not talking about putting the tranny in neutral--that's a different thing altogether) unlike that of most 4WD vehicles. The technical explanation that describes why this is so eludes me at the moment (someone please help me out) but suffice it to say, it is because of this issue that the Denali cannot be towed at speed w/ all four wheels touching the ground. You can however tow/move it at very-slow speed (e.g., pushing it) for very short distances such as during those situations you mentioned w/o risk of damage to the transfer case.
  • oj619oj619 Posts: 1
    How do I replace the antenna base and cable on a 2002 Yukobn XL?
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