GM Service Manual Online
For 1990-2009 cars only

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF

Julian Date

Module Information 1

Numeric

Varies

Module Part Number

Module Information 1

8 digits

XXXXXXXX

Software Design Suffix

Module Information 1

2 Letters

XX

Software Part Number

Module Information 1

8 digits

XXXXXXXX

Battery Voltage

Data

Volts

Varies

Ignition 1

Input 1

Active/Inactive

Active

Ignition 3

Input 1

Active/Inactive

Active

Ignition Power Mode

Input 1

Off/Run/Crank

Run

Key in Ignition

Input 1

Yes/No

Yes