Not sure if these two things are related.

The last day or two my Level Ride light has been going on intermittently, flips on, flips off.

Starting this morning, when I drive on the highway for a while and come to a stop, there is a horrible smell from my car (http://www.cadillacforums.com/forums/#), something like burning rubber.

My air shocks (http://www.cadillacforums.com/forums/#) were replaced 3 months ago. 3 of my tires (http://www.cadillacforums.com/forums/#) are 6 months old, the other is a year old. Pressure on all checks at 32.

Seems to be some vibration when I look in the outside mirror, even though the ride itself is smooth, but not sure if it's abnormal.

I don't see any smoke, or hear any odd noises. No other lights or sensors come on besides the Level Ride light, I did the paper clip method of checking to see if there were engine codes, nothing there but 12.

The smell seems to come from the left rear tire (http://www.cadillacforums.com/forums/#) well.


Any ideas?

Hard to say. I was thinking maybe a bad new tire, but you have been on them for a few months with no problems. Check the rear shocks for leakage, and a good thorough insp. of the read. Maybe something is contacting the exhaust.

What frequency is the ride level cycling? The bouncy ride (vibration) could very well be a bad shock.

Hard to say. I was thinking maybe a bad new tire, but you have been on them for a few months with no problems. Check the rear shocks for leakage, and a good thorough insp. of the read. Maybe something is contacting the exhaust.

What frequency is the ride level cycling? The bouncy ride (vibration) could very well be a bad shock.


Cycling on and off about every 10 or 15 minutes I'd say. Car doesn't seem to be unusually low. But maybe the smell is gas leaking from a rear shock?

With that frequency of cycling you probably have a leak, but it's only air, not gas in the adjustable "gas" shocks. If they are OE units, the interior shock is liquid filled.

If it is leaking, that much, you may be able to hear it. Granted the leaking air might smell from being confined in a chamber, but I wouldn't think it would be a burning smell. It's just a sophisticated balloon.

Has any work been done on the rear axle area or along the left under-side of the car? The air line from the compressor/dryer assembly (up front) could be cracked causing the leak also. You could do a simple soap test at all the air line connections to check them for leaks.

Does the car actually raise when the comp. turns on and lower afterwards during the leak down? You might want to manually operate the adjusting arm at the level control sensor, raise the back end up high and listen and check for leaks with liquid soap. Check the connections up fron too. the comp. in in front of the left fron wheel with access behind the black plastic panel.

Others may have some different ideas.

Have you checked to see if your engine/tranny mounts are worn? They are fluid filled for more cushion. When they leak, a strong smell is produced. This might possibly affect the ride height sensor if it is moving. Just my 2. Good Luck.

the exhaust pipes may be loose causing the rear pipes to make contact with the rubber on the rear shocks . to test simply grab the pipe directly behind the rear wheel and before the resonator and softly rock side 2 side and see if it makes contact with shock. oh yeah, make sure u do this while ur car is off and pipes are cool

CHECK THE PUMPKIN OIL LEVEL.
MAYBE YOUR SEAL IS COOKED.
I HAD SAME SMELL, REPLACED REAR SEAL AND IT WENT AWAY.:bouncy:

I vote for loose shock. Check your nuts. Flat tire can result.

FRANKO