Q: How to replace the Air Suspension Compressor on GMC Envoy?
A: Before starting the air spring compressor installation begin by taking out the air suspension system fuse to stop air suspension leveling sensor calibration issues. After raising the vehicle for support you should remove the air spring compressor from its frame bolts. The change procedure starts with air spring compressor ventilator hose separation from the air compressor followed by air supply lines and air inflator switch electrical connection. Finally, disconnect and remove the air compressor electrical connection to the air compressor. Verify that the compressor's air supply lines feature the identical color pattern as its air spring compressor components before taking out the supply lines completely from the air spring compressor to remove it from the vehicle. For undamaged air supply lines clean their fittings off the new compressor then use the original fittings to connect the compressor components tightening each fitting to 2.25 Nm (18.5 inch lbs.). Replace the air supply lines anytime you detect any form of damage. For installation start by connecting the air spring compressor electrical connection followed by the air inflator switch electrical connection then the air supply line and finally the air spring compressor vent hose. Once the air spring compressor is bolted through frame attachments use 25 Nm (18 ft. lbs.) torque and after vehicle lowering reinstall the air suspension system fuse. Start the engine and continue operation for a minute to verify the air spring leveling system works correctly and measure D height and check for leaks. Air supply lines must receive replacement if they show leaks while connected to the air spring compressor.
Q: How to replace the Air Suspension Compressor on GMC Jimmy?
A: The beginning of Air Suspension Compressor replacement requires automatic level control compressor shield removal. Support the vehicle while simultaneously deflating your system by pulling out the spring clip which secures the t-fitting base on the air line. You must eliminate the rear bumper extension then disconnect the automatic level control air dryer from the air line. First disconnect the power connections to the automatic level control Air Suspension Compressor then remove the nuts before moving the compressor unit off the vehicle. Hanging the automatic level control Air Suspension Compressor by its bracket hook enables installation where you must reintegrate electrical connections before connecting the air line to the air dryer. Install the compressor shield before securing the compressor to the underbody and tighten nuts to 15 nm (11 ft. Lbs.). Once installation is complete replace the rear bumper extension while lowering the vehicle.