GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Instrument Panel Cluster (IPC)

Body Control Module (BCM)

Ignition ON, engine OFF, park brake released.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Park Brake Switch

Inputs

Off/On

Off

Instrument Panel Cluster (IPC)

Ignition ON, engine OFF, brake fluid level OK.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Low Brake Fluid

Inputs

Off/On

Off