Buick Riviera automatic leveling system failure due to corroded air compressor relief valve on Buick Riviera

Some Buick Riviera owners report experiencing failures in the automatic leveling system, particularly due to a corroded air compressor relief valve. These issues can lead to problems with the self-leveling system, such as the compressor failing to activate when the rear of the car is too low, or the air suspension not functioning properly, resulting in the rear end not elevating fully even when the compressor is engaged. Additionally, some owners have found that troubleshooting the system often requires checking for faulty air connections and adjusting the actuator for the level sensor. Corrosion in wire connectors located in the trunk can also contribute to these failures, necessitating cleaning and lubrication with dielectric grease. It is crucial for owners to ensure the ignition is on and to observe the "Car is Leveling" light during troubleshooting, as well as to check fuses and clean the level sensor link to address these issues effectively.