Weird noise coming from underneath after I start up
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Cadillac Escalade, EXT and ESV Forum - 2007-2014 Discussion, Weird noise coming from underneath after I start up in Cadillac Escalade Forums; There is weird sound coming from beneath the cabin about 30 sec to a minute after I start up. It ...
  1. #1
    PeterK36 is offline Cadillac Owners Member
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    Weird noise coming from underneath after I start up

    There is weird sound coming from beneath the cabin about 30 sec to a minute after I start up. It seems like something comes on and runs for a couple minutes and shuts back off. Its kinda loud and annoying. Does anyone know what that could be?

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  3. #2
    MrHolland's Avatar
    MrHolland is offline Super Moderator
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    Re: Weird noise coming from underneath after I start up

    What kind of car are we working on?? Where you from??

  4. #3
    PeterK36 is offline Cadillac Owners Member
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    Re: Weird noise coming from underneath after I start up

    Sorry, first time using a forum. It's a 2007 Caddilac escalade. I live in Minnesota.

  5. #4
    MrHolland's Avatar
    MrHolland is offline Super Moderator
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    Re: Weird noise coming from underneath after I start up

    Welcome sir!! Could it be the air ride leveling out??

  6. #5
    PeterK36 is offline Cadillac Owners Member
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    Re: Weird noise coming from underneath after I start up

    Thank you! Not sure, it could be the air compressor, can I fix that?

  7. #6
    Punmax is offline Cadillac Owners Enthusiast
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    Re: Weird noise coming from underneath after I start up

    Starting up your truck, you should hear an air compressor coming on for 5-10 seconds. If it's really loud, it's probably not long before it stops working.

  8. #7
    Dave1972 is offline Cadillac Owners Member
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    Re: Weird noise coming from underneath after I start up

    definitely auto ride suspension compressor. If it's getting loud--check out arnott on ebay. They sell new compressors that work exactly like OEM and are much less expensive. I've used Arnott's to replace the compressor and leaking rear shocks on my 07 Escalade. I also recently had a front shock leaking oil but replaced with OEM purchased online--don't pay dealer price on front shocks--it's REALLY expensive. I only have 80,xxx miles on mine and also needed to replace the front wheel hub assembly and lower ball joints. Lower ball joints OEM were purchased online--local shop said if the option is there to purchase Moog brand as they are much easier to work with (and better quality). I've put about $3,000 in mine in the past 2 years--bad paint-rear door and liftgate seams, compressor, front and rear shocks, wheel hub assemblies, lower ball joints, backup camera, parktronic sensor in rear bumper. I think that's it so far. UGH.

    Oops, almost forgot cleaning the throttle body, replacing plugs and wires to try and get the idle to calm down and not shake the whole car.

  9. #8
    PeterK36 is offline Cadillac Owners Member
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    Re: Weird noise coming from underneath after I start up

    I will definitely be replacing it, looking into the Arnott's right now. Thank you!

  10. #9
    blackbeauty is offline Cadillac Owners Member
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    Re: Weird noise coming from underneath after I start up

    I'm new to the forum and recently purchased a 2007 Escalade with 80K on it. I'm experiencing the same noise at startup. It last I'd say from 10-15 seconds then it turns off. I'm concurrently having a check engine light coming on. I'm curious to know if you replaced the compressor and if that resolved the noise?

    Thanks.

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