Suspension issue
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Cadillac Escalade, EXT and ESV Forum - 1999 - 2006 Discussion, Suspension issue in Cadillac Escalade Forums; Was driving my wifes escalade yesterday for the first time in a while. I think i recall when you start ...
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    vicb is offline Cadillac Owners Fanatic
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    Suspension issue

    Was driving my wifes escalade yesterday for the first time in a while. I think i recall when you start it, it would make a noise in the back from the air suspension getting ready. When i started yesterday i heard no noise from the suspension at start up, but i am not getting any error messages.

    when you start the escalade, does the suspension make noise as if it is filling with air, or do we have an issue?

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    the cadillac man's Avatar
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    Quote Originally Posted by vicb
    Was driving my wifes escalade yesterday for the first time in a while. I think i recall when you start it, it would make a noise in the back from the air suspension getting ready. When i started yesterday i heard no noise from the suspension at start up, but i am not getting any error messages.

    when you start the escalade, does the suspension make noise as if it is filling with air, or do we have an issue?
    Try this turn the key on with the engine off and see if you hear the compressor if not then something isn't normal and you should be getting the service ride control message(and a code would be in the system that the tech-2 can read)

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    vicb is offline Cadillac Owners Fanatic
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    Re: Suspension issue

    Did as you suggested. No noise from compressor and no service ride control message. About 6 months ago we had new tires put on..could that have caused an issue?

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    the cadillac man's Avatar
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    Quote Originally Posted by vicb
    Did as you suggested. No noise from compressor and no service ride control message. About 6 months ago we had new tires put on..could that have caused an issue?
    It depends on if they used a lift but I doubt it really causing the issue.

    What year is the truck?

    Maybe the compressor motor has failed from age.

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    vicb is offline Cadillac Owners Fanatic
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    Re: Suspension issue

    2005..Have about 80,000 miles on it.

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    Quote Originally Posted by vicb
    2005..Have about 80,000 miles on it.
    Something seems odd have you checked the fuses?
    There is a relay for this next the fuse box under the hood

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    TLMC is offline Cadillac Owners Member
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    Re: Suspension issue

    The only way the compressor would run every time you started the truck would be if you had a leak in the system. If there is no leak the compressor will not run on start up.

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    Quote Originally Posted by TLMC View Post
    The only way the compressor would run every time you started the truck would be if you had a leak in the system. If there is no leak the compressor will not run on start up.
    I don't mean to thread jack, but I've read this quote several times from several different members and I have a related question. I have noticed that when I shut my Escalade off and get out I can hear the air pressure from the rear end release. It is usually about 1 minute after getting out and it is a distinctive rush of air, not a leak. Naturally since the air pressure releases when i get out, the compressor must run and fill the bags up again when i start it. I have always assumed this was supposed to happen. Does anyone have any thoughts on this?

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    Quote Originally Posted by mikedyk43

    I don't mean to thread jack, but I've read this quote several times from several different members and I have a related question. I have noticed that when I shut my Escalade off and get out I can hear the air pressure from the rear end release. It is usually about 1 minute after getting out and it is a distinctive rush of air, not a leak. Naturally since the air pressure releases when i get out, the compressor must run and fill the bags up again when i start it. I have always assumed this was supposed to happen. Does anyone have any thoughts on this?
    I am thinking the shocks has a leak that is sealed when a certain amount of wight is in the truck

    This how I checked mine get some soapy water in a spray bottle and spray the shocks fully where the bladders are then start the truck (while sitting in it) wait till the air compressor shuts off wait a few minutes,

    then get out and watch and wait till you hear the air noise and see if there is bubbles if there is any there there is a leak and the shocks need replacing(mine blew out at night I inspected the shocks but till I soaked them with the soapy water I didn't find the leak) I hope I have helped

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    Quote Originally Posted by the cadillac man View Post
    I am thinking the shocks has a leak that is sealed when a certain amount of wight is in the truck

    This how I checked mine get some soapy water in a spray bottle and spray the shocks fully where the bladders are then start the truck (while sitting in it) wait till the air compressor shuts off wait a few minutes,

    then get out and watch and wait till you hear the air noise and see if there is bubbles if there is any there there is a leak and the shocks need replacing(mine blew out at night I inspected the shocks but till I soaked them with the soapy water I didn't find the leak) I hope I have helped
    I thought about that, however if that were case, the pressure would release immediately after exiting the vehicle. It just seems too controlled for it to not be intentional. It sounds like a valve opens and lets the air out.

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    Quote Originally Posted by mikedyk43

    I thought about that, however if that were case, the pressure would release immediately after exiting the vehicle. It just seems too controlled for it to not be intentional. It sounds like a valve opens and lets the air out.
    It depends on where the leak is at but if it is a valve then the module may be the culprit(this is next to the rear air system) the best way may be to probe the system and see what's up

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    vicb is offline Cadillac Owners Fanatic
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    Re: Suspension issue

    Quote Originally Posted by TLMC View Post
    The only way the compressor would run every time you started the truck would be if you had a leak in the system. If there is no leak the compressor will not run on start up.

    I could have sworn in the past at start up the compressor would make noise. So you are saying that isn't the case and I have no problem?

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    TLMC is offline Cadillac Owners Member
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    Re: Suspension issue

    You have no problem

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    Quote Originally Posted by mikedyk43

    I don't mean to thread jack, but I've read this quote several times from several different members and I have a related question. I have noticed that when I shut my Escalade off and get out I can hear the air pressure from the rear end release. It is usually about 1 minute after getting out and it is a distinctive rush of air, not a leak. Naturally since the air pressure releases when i get out, the compressor must run and fill the bags up again when i start it. I have always assumed this was supposed to happen. Does anyone have any thoughts on this?
    I would say Perfectly normal mine does the same, also my compressor pumps up every time because it dumps the air a few minutes after i turn off the vehicle i have the long wheel base so probably more activity then the short wheel base due to more weight over the rear wheels

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    Quote Originally Posted by wesyder

    I would say Perfectly normal mine does the same, also my compressor pumps up every time because it dumps the air a few minutes after i turn off the vehicle i have the long wheel base so probably more activity then the short wheel base due to more weight over the rear wheels
    That isn't how the compressor does on my dads h2 as you can hear the valve clicking as it levels out the rear(even after the truck is off)

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