GM Service Manual Online
For 1990-2009 cars only
Compressor Relay Command: Indicates when the compressor relay is activated.

Controller Battery Volts: Range 10.0-16.0 volts. This data refers to the battery system voltage as measured by the suspension control module.

Exhaust Valve Command: Indicates when the exhaust valve is active.

Position Sensors: Range 0.5-4.85 volts. This data refers to vehicle height measured in volts.

Vehicle Speed: Indicates speed of vehicle.