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

Arming Status

BCM Data

Active/Inactive

Inactive

Content Theft Mode

BCM Data

Ignition On/Arm Pending/Standby/Sim. Arm. Pend./Trunk Open/Unlocked/Open/Locked/Ignition Lock/Sim. Armed/Armed/Warn Away/Alarm/Audible Only

Ignition On

CTD Status

BCM Data

Armed/Disarmed

Disarmed

Door Ajar Switch

BCM Data

Door Closed/Door Ajar

Door Closed

Door Cylinder Switch

BCM Data

Idle/Unlock/Lock

Idle

Door Cylinder Switch

BCM Data

Volts

Varies

Driver Door Ajar Switch

BCM Data

Door Closed/Door Ajar

Door Closed

Horn Relay Command

BCM Data

On/Off

Off

Security Indicator Command

BCM Data

On/Off

Off

Trunk Ajar Switch

BCM Data

Trunk Closed/Trunk Ajar

Trunk Closed