hi i got a 2003 GM and the rear seems be really high compaired to the front always feel like i am driving down hill ..is there an adjustment on the sensor on the rear end?

good question. the only thing I can find in the chiltons I have (which tops out at 1998) is that there is a on/off switch for the air suspension. I would suspect that yours has had the switch turned off or some valve is stuck on the rear springs. You may have to have a dealer point out where the switch is. I can''t find any adjustments anywhere. there must be a controller for the system somewhere and a dealer should be able to point that out to you. I say should because not all dealers have knowledgeable staff. Good luck.

well figred it out .not the rear air system at all the front coils are weak ..better then rears i guess ..does any one know if 2003 crown vic /taxi/police intercepter springs fit ?

anything from the same model year should cross over between any model crown victoria or grand marquis. The exceptions are the taxi/interceptor platforms. the springs should fit though. They may ride a bit higher from what I''ve read. it''s definitely worth a look at summitracing.com and other sites that sell springs and suspension parts to get a good idea what your in for. also, the shock absorbers do supply some extra lift and that may actually be part of the problem as well.