GM Service Manual Online
For 1990-2009 cars only

Scan Tool Parameter

Units Displayed

Typical Data Value

Operating Conditions: Ignition in RUN, Engine OFF, doors closed

Battery 1

Volts

Varies

Driver Door Switch

Low/High

High

Ignition 1 Input

High/Low

High

Ignition 2 Input

High/Low

High

Ignition 3 Input

Active/Inactive

Active

Key In Ignition

Yes/No

Yes

Liftgate Ajar Switch

High/Low

High

Pass Door Switches

High/Low

High