Diagnostic Aids

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Inspect for the following conditions:

Leaking lines or components-Perform the Automatic Level Control System Leak Test , and Air Compressor Leak Test as necessary.
Performing the Suspension Position Calibration (Without Z95) , Suspension Position Calibration (With Z95) procedure may correct the condition.