GMC Envoy ticking sound from rear, suspected air suspension compressor failure on GMC Envoy

Some GMC Envoy owners report experiencing a ticking sound from the rear, which may indicate air suspension compressor failure. Symptoms of this issue can include the rear end sitting lower than normal, difficulties in raising or lowering the vehicle, and the compressor running excessively. Potential causes of these problems may involve faulty air springs, a worn-out compressor, issues with the control module, or degraded height sensors. If the compressor is unable to maintain pressure due to a leak, it might shut off temporarily and attempt to re-inflate later. Additionally, the air suspension controller may disable the system if it detects leaks or prolonged compressor operation. Leaks in the compressor solenoid seals or problems with the check valve can further impede the compressor's ability to lift the vehicle. It is advisable for owners experiencing these symptoms to have their air suspension system inspected by a qualified mechanic for proper diagnosis and repair.