To replace the air spring compressor, put on safety equipment such as gloves, ear as well as eye protection, and cover the air supply flex lines with a clean material to avoid injury due to sudden relief of pressure. Depressurise the air suspension system only after the rear axle has been supported and set from D-Height to Full Jounce. Start by locating the air suspension system fuse and take out the fuse to avoid calibration problems with the air suspension leveling sensor. Lift up the vehicle, a then take out its air spring compressor mounting bolts. Disconnect the compressor electrical connection after removing the air inflator switch electrical connection and air supply lines, the vent hose. In the disassembly, make sure that the color of the air supply lines, matches that of an air spring compressor for reassembling the compressor to the vehicle, disengage the air supply lines from the compressor and take off the compressor from the vehicle. Check for damage in the air supply lines. if not, remove the fittings from the new compressor and lobby their ends into the fittings and tighten to 2.25 N.m (20 lb in). In case of any damage, replace with air supply lines. Reconnect the electrical connection as well as the air inflator switch connection, the air supply line as well as the vent hose to the compressor. Mount the compressor to the frame mounting bolts, then tighten them to 20 N.m (15 lb ft), after that, lower the vehicle and reconnect the air suspension system fuse. Start the vehicle and let it operate for just about 1 minute to verify the air spring leveling system, inspect D-height, and inspect for leaks at the air supply line connectors; if any leaks are found, replace the air supply lines.