GM Service Manual Online
For 1990-2009 cars only

Body Control Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition On and Engine Off/Doors, Hatch or Trunk, and Hood Closed/No Switches On/Vehicle in Park or Neutral

Auto. Door Locks Mode

BCM ECU Configuration

Enabled/Disabled

Park

Auto. Door Unlock Method

BCM ECU Configuration

Key/Park

Park

Auto. Door Unlock Mode

BCM ECU Configuration

None/Driver/All/Invalid

Driver

Battery Voltage Signal

BCM Data

Volts

Varies

Door Ajar Switch

BCM Data

Door Closed/Door Ajar

Door Closed

Door Cylinder Switch

BCM Data

Idle/Lock/Unlock

Idle

Door Cylinder Switch

BCM Data

Volts

Varies

Door Lock Switch

BCM Data

Idle/Lock/Unlock

Idle

Door Lock Switch

BCM Data

Volts

Varies

Driver Door Ajar Sw.

BCM Data

Door Closed/Door Ajar

Door Closed

Driver Door Lock Actuator Command

BCM Data

Idle/Lock/Unlock

Idle

Passenger Doors Lock Actuator Command

BCM Data

Idle/Lock/Unlock

Idle

Trunk Ajar Switch

Data Display

Trunk Closed/Trunk Ajar

Trunk Closed

Trunk Release Solenoid

Data Display

On/Off

Off

Trunk Release Status

Data Display

Enabled/ Disabled

Enabled

Trunk Release Switch

Data Display

Active/Inactive

Inactive