GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Electronic Brake Control Module (EBCM)

Body Control Module (BCM)

Ignition ON, engine OFF, park brake released.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Park Brake Switch

BCM Data

Off/On

Off

Electronic Brake Control Module (EBCM)

Ignition ON, engine OFF, park brake released.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Brake Warning Lamp

ABS Data

Off/On

Off