I no my compressor is bad and the rear us dragging

[01ssei]

What psi is run in the rear shocks? Typically

[crash93ssei]

There is not really any set PSI that is run in them, also no gauge to tell either.

If the rear end is sagging then you have one or more of the following problems...
Bad springs (which would really only be noticed if the ELC system fails)
Compressor bad
Leak in the air bag in one or both rear shocks
Bad level sensor
Air lines bad
Wiring bad / blown fuse

[01ssei]

I replaced the shocks 2 weeks ago and the fuse is good. I haven't checked the lines or the sensor. But I went to change my oil yesterday and I noticed the shocks were looking rather deflated so I took the line off and bumped, maybe 15psi into them it looked to be siting pretty level then and I checked it this morning and the rr dropped alot and the lr dropped alittle so, I would think the lines have a leak but I cannot hear the compressor run when I start it

[harofreak00]

The most common place for the lines to leak is where it rubs on the body on the passenger side. Check the lines where they are touching metal and see if there are any places rubbed through.

[dkc]

I put the monroe replacement air shocks on my 2000 buick lesabre same system as on my bonneville but i removed the compressor
because it was shot and so was the switch on the control arm i just put a old school valve in the trunk i think the Instructions with the monroes said to keep 30 psi min in them i still had to use a spray bottle with soapy water to find all the leaks that will bubble
like crazy at a leak.