OEM Chevrolet Trailblazer Air Suspension Compressor

Chevrolet Trailblazer Air Suspension Compressor Parts Questions & Experts Answers

• Compressor Assembly, Rear
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  Q: How to replace the Air Suspension Compressor on Chevrolet Trailblazer?

  A: Start by putting on gloves and safety glasses and ear protection before replacing the Automatic Level Control Air Compressor. Wrap a clean cloth around the air supply lines as a precaution. Support the rear axle between D-Height and Full Jounce before depressurizing the air suspension system while removing the air suspension system fuse to prevent calibration problems. Remove the air suspension system fuse first then lift and stabilize the vehicle. Before proceeding disconnect the air inflator switch electrical connection along with the air supply lines and the air spring compressor vent hose from the air spring compressor and separate both the air spring compressor electrical connection and frame mounting bolt connections. The air supply lines need to receive matching colors to those of the air spring compressor before assembly occurs. The technician will detach air supply lines from the air spring compressor so he can remove the compressor from the vehicle. Visual inspection should reveal any damage on the air supply lines. The new compressor's fittings should be discarded in favor of using the existing fittings to link air supply lines to the air spring compressor by torquing them to 2.25 Nm (20 lb in). The diagnosis reveals heavy damage to the lines thus needing replacement. Start by connecting the air spring compressor electrical connection followed by the air inflator switch electrical connection and air supply line and air spring compressor vent hose. Fasten the air spring compressor to frame mounting bolts at 20 Nm (15 lb ft) torque and then lower the vehicle before reinstalling its air suspension system fuse. After vehicle startup check the air spring leveling system's proper operation by running the vehicle for one minute before inspecting D-height and conducting leak checks. Check the air supply lines connecting to the air spring compressor since any detected leaks require line replacement.