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Cadillac Repair/my rear suspension

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Question
QUESTION: my rear suspension does not raise anymore in my 2004 cadallac escalade. why is this and how do i fix it?

ANSWER: Hi Eric,

There are too many things that can be wrong to do a diagnoses over the Internet however, here are a couple things I would consider first.
I am not familiar where Cadillac puts the compressor on the Escalade. On both my Caddy cars, the compressor is mounted on the left inner fender under the hood. Check the fuse for the compressor first. See if there is power going to the compressor. To find the location of the compressor fuse, review your owners manual.

Good luck

Rob

---------- FOLLOW-UP ----------

QUESTION: so i apears that my car will raise every once in a while. more often not though. why is this? should i check the same things?

Answer
Hi Eric,

No you changed the question. Now you tell me at times which means the compressor works.

There is a leveling sensor at the rear axle that may be the problem.
Another question would be; does the rear end sit downward or is it level most of the time? If the shocks are full of air, the compressor will not raise the back each and every time.

Turn the key on. Sit on the rear bumper to see if the rear raises. All this is, is a load leveling system.


Rob

Cadillac Repair

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Rob Painter

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Alarm system questions cannot be answered on this forum. These systems are not what I can answer. Without being physically at the vehicle and not knowing what kind of electrical service has been done on the vehicle, there is no possible way to give an accurate answer over the internet. My expertise is in Ignition/key based anti-theft systems. These issues include GM VATS (resistor chip in key blade) PASSLOCK (MRD)-ignition lock rotation based, no special ignition key and the PKIII Transponder (computer chip in key) systems. These systems are not alarm based and are integral with the starting of the engine. This is why I cannot diagnose alarm problems without physically looking at the vehicle: Alarm systems are a completely different annimal than ignition key/lock based anti-theft system. Many alarm questions come from vehicles 10 years old, and since older, many hands that had been involved over the years.I am an expert in all GM factory (ignition/key based)systems. Alarm system questions pose to many situations beyond my knowledge as to what has been done to the vehicle over the years. Some guy may have actually wired the stereo into the alarm system. Who knows? Over my past 30 years in vehicle wiring repair, I have seen unbelievable wiring disaters done by guys that consider themselves "mechanics." I have seen stereos and alarms intalled using surgical tape. I have seen modules burn up, un-fused circuits, wiring jambed between the doors and even lamp cord used for a starter kill. To answer alarm questions over the internet without examining the vehicle is like asking; What does it take to remove a dent?

Experience

Education/Credentials-ASE certified. 11 years with a GM dealer and 17 years with a repair facility dealing with only the repair of theft recovered vehicles.

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