TrailBlazer 4WD L6-4.2L (2007)
Important: Ensure the color on the air supply lines match the color on the air spring compressor for reassembly.
Notice: Refer to Fastener Notice.
1. Install air line to the air compressor (1) using a new fitting.
Tighten the air supply line fitting to 2.25 N.m (20 lb in).
2. Install the air spring compressor to frame mounting bolts.
Tighten the bolts to 20 N.m (15 lb ft).
3. Install the air line to the air spring.
4. Attach the air line to the outside of the wiring harness using wire ties.
5. Lower the vehicle.
6. Install the air suspension system fuse.
Important: When the air springs are completely deflated, an additional ignition cycle may be required to allow the compressor to
completely inflate the air springs.
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.