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I have a 99 deville and have put in a new rear subframe, and the air ride seems werid. I hear the pump come on but it bottoms out when people are in ut. Help me please.

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  • Cars & Trucks Master
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The dealer can run an active test on the air ride system with a special GM scanner, I suggest you have that test run and then fix whatever they suggest yourself.

Posted on Nov 05, 2012

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Posted on Jan 02, 2017

  • 22 Answers

SOURCE: rear air ride

What you have is a leak in your line(s) or spring(s). Usually the air spring.
Take it to a mechanic and have the system tested. You may also have to replace the compressor due to overheating.
If it is a air spring and you are somewhat of a mechanic yourself then replacing the air spring is a snap. Held in place by large clip on top of spring. Be careful of the line(s) and valve o-ring when air spring is loose. Valve turns out in z pattern.

If you are fed up, there also is a spring replacement set that you can find online.

Posted on Nov 23, 2008

  • 6 Answers

SOURCE: 1998 DEVILLE REAR AIR RIDE INOP

i was told compressor could be stuck open allowing the air to purge as quickly as it comes in.

Posted on May 05, 2009

  • 1129 Answers

SOURCE: 99 Deville rear air shocks not working.

This is an expensive repair sometimes and you may want to replace this system with inflatable air bags that fit inside the rear coil springs and then are inflated. I think they cost about $80.00 or $120.00 depending on the car.

Posted on Jul 14, 2009

  • 5 Answers

SOURCE: WE HAVE INSTALLED NEW REAR SHOCKS AND REAR PUMP ON

hello there. my suggestions would be the airline tubes to the shocks or the leveling valve or the air compressor its self. my compressor went out so now i have to go to napa and get the after market non air ride shocks. its cheaper that way cuz not only do i have to get new shocks any way for the air ride but d have to get the compressor is shot as well. i would check those items first if not working still then i would take to a dealer or just go and get the after market shocks. dave

Posted on Jul 03, 2010

johnjohn2
  • 5763 Answers

SOURCE: rear air ride is flat on 95 deville....what do i

the first thing is the fuses. i've seen many of these that the rear air shocks are bad but customer doesnt know and the pump runs until it burns out,after checking the fuses start the car and listen under the hood for the pump to turn on, if pump turns on then check shocks for leaks, also you would have to make sure the pump is producing air as it runs and the last thing is the level sensor located under the rear of car.

Posted on Jul 13, 2010

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1 Answer

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Does you car come equipped with Air Ride Suspension? I am betting it does and there is a Air Leak and it is just pumping up the system due to the leak.

Without getting under the car, this is my gut impression, maybe you could look yourself and see if you can locate the noise. The System that you are looking at will look something like this...
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Air ride on my 99 cad. devill when people in back seat will bottom out rides to low


If you have Air shocks in the back they are worn out

Your going to get that low ride when people sit in the
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Rear air ride is flat on 95 deville....what do i


the first thing is the fuses. i've seen many of these that the rear air shocks are bad but customer doesnt know and the pump runs until it burns out,after checking the fuses start the car and listen under the hood for the pump to turn on, if pump turns on then check shocks for leaks, also you would have to make sure the pump is producing air as it runs and the last thing is the level sensor located under the rear of car.

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You don't reset the air ride. It's always on and is not like a Lincoln where a switch can turn the compressor on or off.

If it's low the pump could be bad, or the shocks are, eek, blown out and need to be replaced.

Apr 29, 2010 | 1997 Cadillac DeVille

1 Answer

99 Deville rear air shocks not working.


This is an expensive repair sometimes and you may want to replace this system with inflatable air bags that fit inside the rear coil springs and then are inflated. I think they cost about $80.00 or $120.00 depending on the car.

Jul 14, 2009 | 1999 Cadillac DeVille

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