TrailBlazer 2WD V8-5.3L (2007)
Tighten the bolts to 20 N.m (15 lb ft).
5. Lower the vehicle.
6. Install the air suspension system fuse.
7. Start the vehicle and run for approximately 1 minute to ensure that the air spring leveling system is functioning properly.
8. Inspect D-height. Refer to Trim Height Inspection.
9. Inspect for leaks. If a leak is found at the air supply lines connections at the air spring compressor, replace the air supply lines. Refer to Air
Suspension Air Line Replacement.
