On vehicles equipped with rear air springs, the air compressor may fail causing the rear suspension to sit low.Google+
Car Problem Reports
Chevrolet Trailblazer SS Air Compressor for Rear Air Springs May Fail
Chevrolet Trailblazer SS Problem
Average Mileage: 203,904 mi (40,000 mi - 880,329 mi)
air bags deflate overnight from time to time. Pump up right away and stay inflated. Annoying problem on a great truck!
Visitor, 2007 Chevrolet Trailblazer SS, 75,000 mi
Lower down by its self. When not running
Visitor, 2006 Chevrolet Trailblazer SS, 72,000 mi
blown fuse , not
Air bag leak couble time a week and only pump bags up when not in motion
Visitor, 2006 Chevrolet Trailblazer SS, 880,329 mi
Rear air bags leak down over night while truck is parked.