Question about 1998 Cadillac DeVille

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I have a 1998 caddy deville, need to locate load level relay

Rear height to low, pump do not come on , but manually works

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  • bernardfreed Feb 11, 2009

    the rear of my 98 deville sits low. i would like to buy new coil springs but havnt had much luck finding any. the air shocks due seem to work on occasion(when i hit a large dip or bump) but i think they are only supposed to blowup when you have extra weight in the car.

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  • 6,982 Answers

There is a switch with an arm on it that connects the body to the rear axle... likely it's not working!

Posted on Feb 10, 2009

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1998 cadillac deville 4.6 no power for fuel pump fuse relay is working properly


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1998 Cadillac DeVille ' DeVille, Eldorado (VIN E/K) Service Manual ' Body and Accessories ' Wiring Systems ' Component Locator ' Document ID: 519143
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Dec 16, 2014 | 1998 Cadillac DeVille

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Need to locate the air pump that supplies the rear shocks.


The pump is back under the rear of car, but by now, the shocks are sure to be leaking, which causes the pump to run too much burning it up. Best fix is to replace rear shocks with coils and dump the self leveling feature, or prepare to pay big bucks to replace most components.

Mar 30, 2014 | 1999 Cadillac DeVille

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Can't find the relay for the electronic level control(elc) for a 1999 cadillac eldorado


1. Locate the automatic level control height sensor under the rear of the vehicle on the rear suspension support. If the back of the car is too low and will not pump up, ground pin B Yellow wire and see if the compressor will come on and the car will raise.

2. If the car does raise when pin B is grounded, check the powers and grounds to the height sensor.
3. If the powers and grounds are OK and the pump does come on and the car raises when pin B is grounded, the height sensor will need to be replaced.

4. If the car is too high and will not come down, ground pin E White wire at the height sensor to see if the car will lower.

5. If the car lowers when the White wire in pin E is grounded, check the powers and grounds to the height sensor.

6. If powers and grounds are OK and the car does lower when pin E is grounded, the height sensor will need to be replaced. Tech Tips: There are two different automatic level control systems for this car; one is without RPO F45 and one is with RPO F45. The system without F45 has an automatic level control height sensor and with F45 the automatic level control compressor is controlled by the continuously variable road sensing suspension module. Tests/Procedures: 1. Using a head lamp as a load, test the ELC height sensor power/grounds.

2. The power feeds are: Orange wire, pin C and a Brown wire, pin D.

3. The ground is pin A, Black wire.

4. Ground the White wire at the height sensor, check that the vent solenoid in the ELC compressor clicks and vents the air from the system. Author: Bill Siegmann

Dec 24, 2012 | 1999 Cadillac Eldorado

1 Answer

The rear end stays up untill you take air line loose let air out it will go down but will come up again in a few days


this sounds like the load leveling sensor at the rear of the car is not working or gets stuck in the low position causing the air compressor to pump air into the rear suspension,or it is defective and needs replacing.

Apr 20, 2011 | 1998 Cadillac DeVille

1 Answer

Rear suppenion low to the ground


There is an air compressor mountedmabove the rear suspension. The fuse for the air ride suspension is located behind the trunk rear trim panel. There is a level sensor on the rear control arm. If fuse is good, check for power at plug feeding compressor, compressor failure common. With suspesion at low position, sensor should send power to compressor. if no power suspect height sensor. Check relay for power and operation although failure rare.

Dec 25, 2009 | 1999 Cadillac DeVille

1 Answer

My 1998 cadillac deville rear shocks are low my pump comes on for split second and goes off


Normal operation is for the pump to run for a few seconds every time the vehicle is started. After this, the level sensor will determine whether or not the pump should run. Sounds like the sensor is not activating the pump.

Oct 24, 2009 | 1998 Cadillac DeVille

1 Answer

1989 caddy deville Leveling system override?


Pull the relay for it. Listen for it clicking on passenger side.

Jul 07, 2009 | 1989 Cadillac Sedan DeVille

3 Answers

Air ride is not working


were is the fuse located for the air ride

Jun 09, 2009 | 1999 Cadillac DeVille

1 Answer

96 cadillac deville


locate the ride height control sensor box with a small rod connected to the rear control arm. this rod needs to be loosened and raised about 1 and 1/2 inches, and tightened in place. this will only work if your rear load leveling still works on the car, as the air shocks are pumped up resulting in a lift w/out fuckin up the whole car

Jul 05, 2008 | 1996 Cadillac DeVille

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