How to Replace an Air Suspension Air Compressor:
Part 1 of 2: Removing the air suspension air compressor from the vehicle.
Step 1: Turn the ignition switch to the ON position.
Step 2: Release the air pressure. Using the scan tool, open the vent valve and relieve all of the air pressure from the air lines.
After the air lines have been depressurized, close the vent valve. You do not have to deflate the air springs.
Step 3: Turn the ignition switch to the OFF position.
Step 4: Disconnect the air line from the compressor dryer. The air line is attached to the air compressor using a push-to-connect fitting.
Press and hold the quick disconnect lock ring down (noted by the red circle above), then pull the plastic air line out from the air dryer.