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GMC Yukon Denali/XL Autoride Suspension

keithb4keithb4 Posts: 2
edited June 2015 in GMC
I have owned an 03 Denali for two years. Recently whenever I start up, I hear a motor running which sounds like a compressor from under thr rear of the car. I believe this is the Autoride feature. Thing is, when I first bought the car, it would only run if I had a load in the back, or put a trailer on. Now it runs every time I start up. Ideas?

Looking To Do-It-Yourself?
How To Replace Air Shock Compressor Motor


  • rshtrsht Posts: 277
    Sorry, I can not speak exactly to your model year as I have an 07 Denali; but, with my 07 Denali, the Autoride system does run for a few seconds each time I start it up. The system also releases air out of the system when I turn the ignition off, which lowers the vehicle by about half to an inch... With your Autoride system, I would say the key is to make sure that the compressor stops running after a few seconds of pumping; if it runs all the time or runs periodically every few minutes (while the engine is running with the vehicle parked), then I would be concerned about a possible leak in the system... Let's hope this is not the case as each replacement OEM Air Shock is in the $300+ range... ouch!
  • Thanks, that confirms my suspicions that I have a leak. It runs for about 20-30 seconds every time I start the car, and randomly while I am driving. Looks like I need a trip to the mechanic.

    Thanks for your help.
  • Hi all! I have an '02 Yukon XL w/ autoride. My front right and left rear are shot and need to be repaired. I have been told by 2 separate mechanics that I need to replace all 4 (not just the two bad ones) b/c of the design. It will cost me in excess of $2400 to fix this. My car is sitting at 113K, recently replaced the entire intake manifold, had the throttle body replaced, new brakes, and regular maintenance. I am, over all, worried about final cost.

    My choices?

    1. repair and keep the car til it dies a miserable death b/c fixing the suspension will get me at LEAST another 75K miles!

    2. Trade it in and buy a new-to-me one (maybe an '05 or '06) b/c the cost of repair is more then I should pay given the value of the car.

    3. Other -- b/c there is always an other

    Help! What would you do and why? Thanks for the help!
  • Yup! That is exactly what it is Keithb4... Mine was doing that and it was a leak.
  • rshtrsht Posts: 277
    Parts wise for both rear autoride shocks are around $600 at your local GMC dealerships (its about $100 less per shock if you get them other than your local GM dealerships), as price for the front pair its the same story; so for all 4 shocks, the parts price is at about $1200, that means the remaining $1200 are mostly for labor... which in my opinion is a bit too pricey. I tend to agree about replacing all 4, but, not at the labor rate they are charging.

    Assuming you only need to replace all 4 Autoride shocks (no air line leakage or compressor and position sensor issues), you may consider an option #4 if you feel up to it, that is to order your own parts/shocks and have the mechanic replace them for you. Check out the store in the URL below (just found this place a couple of days ago...) where you can purchase the exact same OEM shocks for the front (Part Number 00GMOEF) and rear (Part Number 00GMOER)... Good Luck to you!
  • rshtrsht Posts: 277
    BTW, if you do choose option #4, be sure you have all the right shocks before going to your reliable mechanic. The part numbers I had in the post were from the Arnott site, double check with them for your specific model before ordering...
  • jgconstrjgconstr Posts: 1
    arnott Inc has replacement parts oem for 1/3 the price and great service there on line just got shocks for 2004 suburban autoride. But I will install my self good luck
  • vic136vic136 Posts: 1
    I have an 02 Yukon Denali for about 5 yrs, the compressor a the rear of the truck has not turned on for the past couple of week. Is my compressor bad and is it an easy fix?
  • obyoneobyone Posts: 8,054
    Check the fuse first.
  • dbrown6dbrown6 Posts: 4
    I have the same problem on my 02 Denali XL. I tested all the fuses, no bad fuses. I don't see a label that clearly indicates a "auto-ride" compressor or any other variation that I would relate to the suspension. Am I not the master of the obvious or is there another name for the auto ride fuse? The truck now sags just a bit when it is loaded. I don't notice any big change in handling, it just does not sit level at all times.
  • jim334jim334 Posts: 9
    My 2002 Yukon XL did not pump up to level yesterday when I had a load on. Where is the fuse for the compressor located.
  • dbrown6dbrown6 Posts: 4
    Under the hood over the left fender. Mine was good. Either I have no bleed down or my pump just doesn't work. It's cheaper to have a failed pump!
  • jim334jim334 Posts: 9
    Checked the fuse and it was OK. I will check the levers that make the compressor engage. I do not have any message at the dash saying anything is wrong.
  • tidestertidester Posts: 10,059
    Can you describe the noise?

    tidester, host
    SUVs and Smart Shopper
  • sounds like a grinding sound ,like when the fule pump is turning on only louder and last longer and 10-15sec.
  • rshtrsht Posts: 277
    Not knowing your particular Year and Model, your vehicle probably has the factory Auto ride height adjustment system (aka Auto Leveling system); some where in this system there is a fault, which the display is telling you to bring it to your nearby dealership for service. The fault can range from a leaky component (air hose, one of the air shocks), a bad height position sensor, electric connection to your on-board compressor to a bad compressor and etc... Hope its nothing serious. Good Luck!
  • I agree with previous poster. I had the exact same problem it was really problematic. When you have one bag that is leaking, you have to replace all of it. I took it to about 8 different people for estimates for repair and the best deal I got was $2000 to replace the air ride suspension or $1500 to buy the parts and have someone completely remove it and just use regular shocks. Good luck!
  • rshtrsht Posts: 277
    Take a look at this place called Arnott, they carry the OEM shocks and components for quite reasonable price; but we have to find and do the repair ourselves, or pay more $$$ for others to fix.
  • which fuse is it?
  • rshtrsht Posts: 277
    In case your's is a different year, the best thing is to look under the box cover for specific fuse location for the system.
  • Hi folks, I would like to find the location of my compressor pump, my ride is rideing on the axle, the fuse is ok, but no sound coming from the pump and no dash info.
    2002 Denali XL 145,000 mi.
  • rshtrsht Posts: 277
    The Auto Level Control (ALC) air compressor should be on the driver-side behind the left rear wheel wall mounted on the outer side of the frame and can be accessed from under the vehicle.
    PS. Besides the fuse, have you also verified the ALC Relay under the hood (in a black relay/fuse box)?
  • I was unable to find a alc relay but I did find a
    RTD autoride ( real time damping ) would this be the right relay?
  • rshtrsht Posts: 277
    Yes, it could. Make sure its not the cause before you tackle wiring and the compressor. Good Luck.
  • I'm considering purchasing a new yukon denali but I'm concerned about possible issues with the autoride suspension. I pickup about 600-800lbs of business supplies every week. The drive is a only a short distance but am I setting myself up for persistant autoride suspension issues?
  • rshtrsht Posts: 277
    In my opinion, as long as you are within the allowed carrying weight of your vehicle they should be fine, which is true for any suspension system OEM or aftermarket. Just keep in mind, when your vehicle is carrying a heavy load, speed and road condition can most certainly contribute to the ware & tare of your suspension. FYI, I had a 2000 Toyota Land Cruiser, it suppose to be bullet-proof, right? Well, let me just say that my TLC has been a perfect SUV until I had to trade it in for my current 2007 Yukon Denali. Nothing is perfect, but, so far my 07 Denali has been problem free other than an initial recall to fix the battery drain issue.
  • well folks, i went to the dealer ship and got a alc relay but can't find it in the fuse box under the hood of my 2001, only the rtd fuse. dont know to go from here.
  • Wondering how long the shocks, rear pinion seal/shaft, and fronts struts should last on this vehicle? I have 83,000kms which are all to and from my 3 kids sports. I tow a tandem jet ski trailer on occasion. I took it in to the dealership for it's semi annual servicing, and have the brakes done(told back in June that they would need to be done this fall) and was absolutely horrified to find out that apparently my shocks were cracked and leaking and needed to be replaced. They also said that the rear pinion seal was leaking. A $2.75 part cost $240. in labour! My total bill by the time everything was fixed, $2600. I've only had this vehicle for 3 1/2 years!
    I phoned GM and the service person said she would look into this and get back to me, but never has.
    This vehicle has been in for recalls, and warranty work since the day I got it, on a very regular basis, and as much as I love it, I'm really getting fed up. :lemon: ?
    Hopefully someone can enlighten me on the life expectancy on shocks.
  • i am getting a motor sound humm when i turn my key to the on positon...and again after i crank the am aware of the auto leveling system...but should i be able to hear it to a point that whoever is around turns and gives and funny stare..what can i do to silent the noise a bit
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