GM Service Manual Online
For 1990-2009 cars only

Scan Tool Output Control

Additional Menu Selection

Description

Automatic Level Control Test

Automatic Level Control Compressor Test

Commands the compressor ON and OFF.

Automatic Level Control Test

Automatic Level Control Exhaust Valve Test

Commands the exhaust valve ON and OFF.

Recalibration

ALC Trimset

Commands the recalibration of the Suspension Control Module for ride height.