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1999 Cadillac DeVille Electrical Level Ride System May Fail

The electronic level ride system may not work properly; this may result in the rear of the vehicle riding too high or too low. Our technicians tell us that a height sensor or exhaust valve failure are common issues with this system. Proper diagnoses will be necessary to confirm the exact fault.

Affected Model Years

This issue affects Cadillac DeVille model years 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, .

210 people reported this problem

  • 1999 0 Miles
    My car is riding to low. I dont have the money for repairs.But,i can do it my self,if someone tell me/
  • 1999 0 Miles
    Level ride not working car setting too low
  • 1999 97,600 Miles
    when i drive down the road the rearend sways side to side. i haven't tried anything yet. i am looking for the solution.
  • 1999 0 Miles
    My car is not sitting at the proper height,Its saging and I have to watch how I back out of driveways.Its not sagging to the ground.
  • 1999 133,000 Miles
    rear electronic air schocks rear of car setting high one side higher 2004 caddie deville dts how do i disable to get rear of car down
  • 1999 70,000 Miles
    Compressor does not run. Checked relay/ fuses. Ok.
  • 1999 0 Miles
    The air ride suspension motor works but the car still sits low
  • 1999 80,000 Miles
    I have a 2005 Cadillac dts that the rear air ride compressor is not working, if I banged on the old one it would work sometimes. Bought a new compressor and installed and the compressor still doesn't work.
  • 1999 54,000 Miles
    rear air shocks leaked. WAY expensive to replace with OEM, so installed spring shocks and bypass resistors.Worked great!
  • 1999 51,000 Miles
    Vehicle seldom used to transport passengers. First noticed when two persons, with baggage, was being transported to Airport, noticed vehicle ride was exceptionally rough and very low in the rear, barely clearing the ground.It continued to sit low but ride improved when passengers were dropped. A check with the Cadillac Dealer quoted an outrageous price to diagnose the problem, therefore, no repair or diagnosis were ever done to date. Vehicle has only 72,000 miles.
  • 1999 85,000 Miles
    The front has no air and bounces down the road. The back used to move up and down. It stays down all the time now.
  • 1999 0 Miles
    The rear end is sitting too high
  • 1999 61,999 Miles
    With any weight in the trunk the bottom sags and rides low.
  • 1999 130,000 Miles
    my 1990 Cadillac Deville Coupe's rear end drops down after about 10 minutes of driving. I have 20 inch rims on it so that is a problem because the tires rub. i put on new shocks thinking that was the problem, for the most part its fixed but say when i drive up a steep hill and the back end drops below a certian point the back end wont level back up to where it should be
  • 1999 178,000 Miles
    The rear of this car,seems to sit a little higher
  • 1999 145,000 Miles
    rear of car rides too low; mud flaps drag
  • 1999 95,000 Miles
    rear end too low!
  • 1999 174,000 Miles
    Just bought the car and it says service ride system my dad said I need to do the shock conversion beclouded my air bags aren't working
  • 1999 115,000 Miles
    Setting a little low and more rough ride then it should be
  • 1999 154 Miles
    Back is low

Cadillac DeVille 1999 Common Problems