1997 Olds Silhoutte rear air suspension won't stop airing up.?

Question

Our 1997 Olds Silhouette has the automatic leveling/on board air compressor and it won't stop airing up. It stops when you turn the key on, but starts again when you turn it off. A mechanic unplugged the relay to get it to stop. Anyone know what causes this?

Answer 1

The levelling sensor attached to the rear axle is either stuck or has become disconnected. Someone is going to have to crawl under there and check it. Or get it up on a hoist.