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Q: Auto ride level on 1999 Buick Park Avenue

The auto level system has the back end of my car lifted to the highest level. I have disconected the level adjustment lever and I can hear the compressor run when I manually move the lever. It is as though the system will not bleed off excess air. How can this problem be fixed?
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It is common for the pressure release valve to fail. The valve is part of the compressor cylinder head assembly. There is a cylinder head replacemant kit available so that you don't have to replace the complete compressor. In order to be sure the release valve is at fault you will need a wiring digram which you can use to confirm that the proper signal is being sent to the release valve from the height sensor.
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