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'04 Yukon XL questions

Discussion in 'Chevy Suburban Forum (GMC Yukon XL)' started by wwilkens, Oct 30, 2012.

  1. wwilkens

    wwilkens New Member

    I posted earlier but can't seem to find it anywhere - so here goes again. I just bought an '04 Yukon XL. It seems to ride okay but has an error message on the DIC that the Autoride needs servicing. The shocks and air compressor look fine and all the fuses are good. However, I have not yet heard the air compressor start up and run. Any ideas on what could be wrong? I also noticed that the heater won't switch back and forth between the floor and mid outlets. It was stuck on the floor initially but now it stuck on the mid outlets. Do you think this is the flapper valve motor or the control itself? I also need to buy an owner's manual. Any ideas where I can get one? Thanks everyone. Wes
  2. Kraziken

    Kraziken Rockstar 100 Posts

    Not sure about the autoride. I just got a 05 GMC this week myself. also Autoride. I have no idea how to troubleshoot, but mine is working fine at the moment.

    As for the outlets, maybe do a physical check. On my other '98 Burb, when I had it serviced, somehow one of the techs disconnected something and didn't connect it properly. So vent control was not working either. Hopefully it is something simple for you.

    Manuals, I think the best source is ebay.
  3. Bighornkid

    Bighornkid Member 2 Years 100 Posts

    Hi Wes, Welcome to The Club. I too have an 04 XL that has same message. Dealer says there is nothing wrong with the system itself but in the computer. I just clear it each time that I start it with the button on the stearing wheel. I've been doing this for about 9 months and have had no problems. Dealer said it would cost almost $1000.00, to replace whichever computer is involved. Good luck with yours.
  4. wwilkens

    wwilkens New Member

    Thanks for your help kid. I'll probably just start doing the same thing. I'm not all that excited about changing the computer. I do wonder how the thing can work though. I've never heard the compressor run.
    Wes
  5. Pikey

    Pikey Active Member Staff Member 2 Years ROTM Winner 1000 Posts

    You can replace the rear shocks with a kit that comes with resistors that plug into the sensor connectors. It stops the message. If you have not heard the compressor turn on then that may be your issue. If you crawl under the rear look for the level sensor. I have seen them break and leave the pump running constantly. If that happens the pump burns out. The sensor should be connected to the rear axle on a bracket close to the frame. When there is weight in the truck the frame moves down and pushes the sensor down turning the pump on. If you find it, try moving it around and see if you can get the pump to kick on.
  6. wwilkens

    wwilkens New Member

    That all helps. Thanks for the information. I will check out the sensor tonight to see if I can get the compressor to run.
    Wes
  7. wwilkens

    wwilkens New Member

    Pikey,
    Say, I did check for any sensor on the rear axle and didn't find one. I don't know what method they used to determine the pitch angle. Since I've also got heater issues, I might just have to let this slide for a while.
    Thanks anyway,
    Wes
  8. Pikey

    Pikey Active Member Staff Member 2 Years ROTM Winner 1000 Posts

    see if you can follow the wiring from the compressor. It should lead you to the sensor.

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