GM Service Manual Online
For 1990-2009 cars only

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, Engine OFF

Battery 1

Security Data

Volts

9-16 Volts

First Alarm Activation

Security Data

Default, Driver Door, Pass Door, Trunk, Power Mode

Default

Horn Relay Cmd.

Security Data

On/Off

Off

Lockout Timer Status

Security Data

Seconds

0 Seconds

Second Alarm Activation

Security Data

Default, Driver Door, Pass Door, Trunk, Power Mode

Default

Theft System Status

Security Data

Disabled, Disarmed, Pre arm, Armed, Pre alarm, Alarm, Passive arm

Disarmed

Third Alarm Activation

Security Data

Default, Driver Door, Pass Door, Trunk, Power Mode

Default