GM Service Manual Online
For 1990-2009 cars only

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Body Control Module (BCM) Scan Tool Data List

Operating Conditions: Ignition ON/Engine OFF

Battery Voltage

Data

Volts

12.5

SWC Switch Voltage

Data

Volts

12.5

Ignition Accessory

Inputs

Active/Inactive

Active

Ignition 0

Inputs

On/Off

On

Ignition 1

Inputs

On/Off

On

Ignition 3

Inputs

On/Off

On

Key in Ignition

Inputs

Yes/No

Yes

Left Rear Door Ajar Sw.

Inputs

On/Off

Off

Right Rear Door Ajar Sw.

Inputs

On/Off

Off

SWC Switch Power

Outputs

On/Off

On

GM Part Number

ID Information

Numeric

XXXXXXXX

Julian Date of Build

ID Information

Numeric

XXX

Year Module Built

ID Information

Numeric

XXXX

Driver/Passenger Door Module (DDM/PDM) Scan Tool Data List

Operating Conditions: Ignition ON, Engine OFF

Door Ajar Switch

Inputs

On/Off

Off

Liftgate Module (LGM) Scan Tool Data List

Operating Conditions: Ignition ON, Engine OFF

Liftgate Ajar Switch

Data

Closed/Ajar

Closed

Liftglass Ajar Switch

Data

Closed/Ajar

Closed

Endgate Module (EGM) Scan Tool Data List

Operating Conditions: Ignition ON, Engine OFF

Lower Left Ajar Switch

Input/Output

Closed/Ajar

Closed

Upper Left Ajar Switch

Input/Output

Closed/Ajar

Closed

Upper Right Ajar Switch

Input/Output

Closed/Ajar

Closed