Automatic Level Control System Leak Test
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Disconnect the air tube from the air dryer.
- Attach the air tube to the J 22124-B pressure gauge on the side opposite the toggle valve.
- Close the toggle valve.
- Apply service air pressure to the service valve and pressurize until the J 22124-B pressure gauge reads 550 kPa (80 psi).
- Verify that the system maintains pressure for at least 1 minute.
- If the system does not maintain the specified pressure for the specified amount of time, check the shock absorber air sleeves, air tubes, and all connections for air leaks using a soapy water solution. Repair or replace any leaking components.