Well the front is perfect, The said at first they thought the release valve on the compressor isent releasing the pressure... the valve is located on the compressor for the air ride. I was told it would be around 500-700 for parts labor then they said "Good news we fixed it and it dident even need a part we adjusted the ride height sensor" i was like cool they charged like $130 the first time. it went back up i brought it to them they said there is no warranty on labor jobs..
I bring it to another shop a few weeks ago they said the same thing then went in there removed the sensor "played with it" and put it in it, They claimed it work fine. It rode fine for a few days then the same thing. Same answer so waranty on labor that cost was like $100.