GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Driver Door Module (DDM)
Table 3: Driver Door Switch
Table 4: Passenger Door Module (PDM)
Table 5: Remote Control Door Lock Receiver (RCDLR)

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON

LF Door Ajar Switch

Doors

Door Closed/Ajar

Door Closed

LF Latch Solenoid Command

Doors

Active/Inactive

Inactive

RF Door Ajar Switch

Doors

Door Closed/Ajar

Door Closed

RF Latch Solenoid Command

Doors

Active/Inactive

Inactive

Trunk Ajar Switch

Body Rear End

Trunk Closed/Trunk Ajar

Trunk Closed

Trunk Release Solenoid Command

Body Rear End

Off/On

Off

Trunk Release Switch

Body Rear End

Active/Inactive

Inactive

Driver Door Module (DDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON

Battery Voltage Signal

Data

Volts

9-16 Volts

Deadbolt Actuator Command

Data

Idle/Lock/Unlock/Invalid

Idle

Ext. Driver Door Handle Switch

Data

Active/Inactive

Inactive

Int. Driver Door Handle Switch

Data

Active/Inactive

Inactive

Lock Switch Indicator Command

Data

Off/On

Off

Driver Door Switch

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON

Battery Voltage Signal

Data

Volts

9-16 Volts

Door Lock Switch

Data

Idle/Lock/Unlock

Idle

Passenger Door Module (PDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON

Battery Voltage Signal

Data

Volts

9-16 Volts

Door Lock Switch

Data

Idle/Lock/Unlock

Idle

Ext. Psgr. Door Handle Switch

Data

Active/Inactive

Inactive

Int. Psgr. Door Handle Switch

Data

Active/Inactive

Inactive

Lock Switch Indicator Command

Data

Off/On

Off

Remote Control Door Lock Receiver (RCDLR)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON

Battery Voltage Signal

Data/Door and Trunk Switches

Volts

9-16 Volts

Int. LF Door Handle Switch

Data/Door and Trunk Switches

Active/Inactive

Inactive

Ext. LF Door Handle Switch

Data/Door and Trunk Switches

Active/Inactive

Inactive

Int. RF Door Handle Switch

Data/Door and Trunk Switches

Active/Inactive

Inactive

Ext. RF Door Handle Switch

Data/Door and Trunk Switches

Active/Inactive

Inactive

Ext. Rear Compartment Lid Release Sw.

Data/Door and Trunk Switches

Active/Inactive

Inactive