Question about 1998 Cadillac DeVille

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What is the possible problem when my 98 deville rear suspension is jacked up to the top all the time? is there a way to reset it This occured after the last time I had the car in for repair and then emptied the trunk of a few things like folding chairs and golf clubs. Nothing really heavy.

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I have seen this before. They put car on lift which lets suspension drop. When they set it back down the Air ride leveling rods get stuck and think they need to stay full. Like what was already mentioned, check your levelers located next to your suspension air bags to see if they are stuck.

Posted on Nov 14, 2009

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Ur air ride sensor or relay is sticking or going bad not

Posted on Nov 14, 2009

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2 Answers

Rear air suspension is VERY stiff since changing right rear tire


Couple questions.
why was the tire in need of being replaced?
was there any damage or impact to the car?
when was the last time it was jacked up or lifted?

the first things that come to mind is a bent or hyper extended shock.
second thing that comes to mind is maybe somebody jacked it up one a suspension part and bent it

Jan 02, 2016 | 2002 Buick LeSabre

1 Answer

Need new struts on rear, Would like to replace with air shocks. Any suggestions on how I would do this?


Shock Absorber -The rear already has air shocks on the 1999 Cadillac Deville: REMOVAL & INSTALLATION Rear
  1. Before servicing the vehicle, refer to the precautions in the beginning of this section.
  2. Remove or disconnect the following:
    • Rear wheel Fig. 1: Exploded view of the rear shock absorber mounting 9300vg06.gif

    • Negative battery cable
    • Shock absorber electrical connector from the rear suspension support, If equipped
  3. Support the lower control arm with a jack to relieve the tension on the shock absorber.
  4. Remove or disconnect the following:
    • Lower shock absorber mounting bolt and nut
    • Upper mounting nut, retainer, and insulator
    • Shock absorber compress by hand and remove through the upper control arm
    To install:
  5. Position the top of the shock absorber with the insulator attached into the suspension support.
  6. Install or connect the following:
    • Upper shock insulator, retainer and nut. Torque the nut to 55 ft. lbs. (74 Nm).
    • Shock absorber lower mounting nut/bolt. Torque the nut to 75 ft. lbs. (102 Nm).
    • Shock absorber electrical connector to the rear suspension support, if equipped
    • Rear wheel
    • Negative battery cable
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Jul 29, 2010 | 1999 Cadillac DeVille

1 Answer

I think that my 1998 Cadillac air suspension system is going bad


I had a problem with my '98 Deville. I had a lot of issues with the air shocks and all the other electronic stuff that goes with that. I called the dealer, and they wanted $3500 to fix it!!! I found www.Strutmasters.com and they converted my car to a "passive" suspension, which bypassed that whole computer thing. Now I have a lifetime warranty, and I am VERY satisfied with the ride. The best part is that it only cost $800 and I got all new suspension! I highly recommend them for your vehicle!

Jul 22, 2010 | 1998 Cadillac DeVille

1 Answer

Low rear suspension on my 1999 Cadillac DeVille


Do you hear your compressor running? It may be that it is getting tired and ready to burn out on you. I replaced the compressor twice on my Deville before I found that there were so many holes and nicks in the air bags and it was going to cost me almost $1500 to fix the whole system. I went online and found Strutmasters. I got a non air conversion kit for my car and love it. Saved me money and headache.

May 20, 2010 | 1999 Cadillac DeVille

1 Answer

Rear suspension has jack up and won't lower on


Possibly the height sensors or valve block at fault. Or a compressor failure. May need to be put on the diagnostics machine to check.

Jan 11, 2010 | 2003 Land Rover Discovery

1 Answer

My 98 Cadillac DeVille rear air suspension system works great UNTIL I load weighted luggage in trunk and passengers in back seat. I then drive around for 15 to 45 minutes and thats when the rear end of the...


Common problem on all air suspension vehicles. It could be that there is a hairline crack in one of the shock bladders or that the pump is just too weak to pump up to it's intended pressure, a sensor or solenoid could also be bad.

Whenever I run into this problem I order a spring conversion kit for that vehicle, it is usually not worth spending $3000+ to repair the suspension.

www.Strutmasters.com sells the best kits, $327.00 for the rear. It also comes with a resistor so that your suspension light is not on.

Sep 19, 2009 | 1998 Cadillac DeVille

5 Answers

98 cadillac deville needs rear shocks


I have a 1998 Deville and both rear coil springs are broken.. It also has the air shocks that I dont think work.. Can I put regular shocks in and is there a after market coil spring out there for it ??

Mar 12, 2009 | 1998 Cadillac DeVille

1 Answer

98 deville rear suspension problem


You may have either leaking shocks. follow the air line from the shock to the compressor.

Jan 03, 2009 | 1998 Cadillac Seville

2 Answers

Rear suspension noise


you should have rear struts with a leveling system and also strut mounts most likey its your strut mounts

Jul 21, 2008 | 1999 Cadillac DeVille

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