The 2007-2013 GMC Yukon & XL 1500 is built with the following suspension components:
2007-2013 GMC Yukon & XL 1500 Air Shocks (x2)- The GMC Yukon features two electronically-controlled air shocks which use air bladders rather than standard coils to dampen, or even out, the ride.
2007-2013 GMC Yukon & XL 1500 Coil Springs (x4)- These coil springs work on the same principles as those found in a passive suspension. However, they are designed specifically for your Yukon's stock suspension and will need to be replaced should you decide to convert to a passive suspension.
2007-2013 GMC Yukon & XL 1500 Electronic Struts- These adjustable electronic struts are controlled by electrical charges sent by the suspension control module. They control the comfort of the ride using a gas-charged hydraulic fluid and metal particles.
2007-2013 GMC Yukon & XL 1500 Air Lines- These plastic hoses bring pressurized air generated by the compressor into the air springs. This air allows the air springs to inflate to the proper height and pressure.
2007-2013 GMC Yukon & XL 1500 Solenoids (x4)- The solenoids on your Yukon are responsible for regulating the air pressure in each of its air spring. They are connect your Yukon's electrical and mechanical components to its suspension control module. They will begin to leak as they get older, which will put an extra load on other components such as the compressor and cause them to deteriorate more quickly.
2007-2013 GMC Yukon & XL 1500 Compressor- The air used to inflate the air springs in your Yukon is generated in the compressor before being pumped into the air bags via the air lines. It is often the most difficult and expensive component in an air suspension to replace or repair.
2007-2013 GMC Yukon & XL 1500 Dryer Assembly- Moisture causes a great deal of damage to an air suspension system from the inside out, most often by freezing and cracking. To combat this, your Yukon features a mechanical dryer which removes moisture from the system. Most experienced mechanics advice that you replace this component whenever the compressor is replaced.
2007-2013 GMC Yukon & XL 1500 Suspension Control Module- Your GMC has a special suspension computer that uses signals sent from the height sensors to determine how much each air spring needs to be lowered or raised. It then sends signals to the rest of the system to keep the vehicle at its proper ride height.
2007-2013 GMC Yukon & XL 1500 O-rings- The air suspension system in your Yukon uses rubber washers to keep the air lines sealed where they connect. Proper seals ensure that the system stays efficient and free of debris. They should be replaced whenever possible.