Have not looked into this other than someone pulled the fuse in the trunk to turn it off. Put a fuse back in and the compressor just keeps running...rear end(level) does go up...or down. It's a 92 Eldorado....do the lines go bad...are they plastic or metal? Or is the leveler sensors bad....not getting any error codes for it....my best guess hole or broken line causing the lines to leak air. Common problem? whats the fix?
PLEASE HELP.

The lines are nylon.You'll have to get under the car and follow them to each shock to find a leak if the is one. You should also see a lever attatched from the frame to the suspension on one side if I recall correctly. That is the trigger so to speak or actuator that activates the switch. Your problem may lay there. It will make more sense when you see it.