Diagnostic Aids

WARNING: This page is about a different car, the 2007 Hummer H2. However, it is still accessible from the selected car via links, so may be relevant.

Repair all other DTCs before C0711.

This DTC is set when:

The pneumatic status of the air suspension system is out of limits.
When excessive amounts of time have elapsed when inflating the air springs.
When there is a air leak in the system.
When vehicle speed is greater than 3 km/h (1.8 mph) and rate of height change is out of limits which may be caused by a damaged LR or RR air suspension sensor.
When the 60-amp compressor fuse is open.
When the compressor relay is defective.
When there is an intermittent or permanent loss of continuity between the compressor and the compressor supply voltage during an upwards leveling event.