GM Service Manual Online
For 1990-2009 cars only

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF/Vehicle in PARK/Headlamps in AUTO

Auto. Learn Timer

Security Data

Seconds

0 Seconds

Battery Voltage

Data

Volts

Varies

Left Rear Door Ajar Switch

Inputs

Off/On

Off

Passlock™ Code

Security Data

Open/Short/

Tamper/Numeric

Valid Code 1-10

Passlock™ Data Voltage

Security Data

Volts

0.86-5 Volts

Passlock Ignition Cycles

Security Data

Cycles

Varies

Passlock Power

Security Data

On/Off

On

Passlock™ State

Security Data

Ignition Off/Tamper/Fail Enable/Fail Enable Dec/Seedkey Lrn Pend/Seedkey Learn/Auto Learn Pend/Learn Passlock™/Monitor Passlock™/Normal Decision/Auto Learn

Monitor Passlock

Right Rear Door Ajar Switch

Inputs

Off/On

Off

Seed and Key Timer

Security Data

Seconds

0 Seconds

Tamper Timer

Security Data

Seconds

0-600

Powertrain Control Module (PCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF/Vehicle in PARK/Headlamps in AUTO

VCM/PCM in Fail Enable

Engine Data 3

YES/NO

NO

VTD Auto. Learn Timer

Engine Data 3

ACTIVE/INACTIVE

INACTIVE

VTD Fuel Disable

Engine Data 3

ACTIVE/INACTIVE

INACTIVE

VTD Fuel Disable Until Ignition Off

Engine Data 3

YES/NO

NO

VTD Password

Engine Data 3

OK/Incorrect

OK

Driver Door Module (DDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF/Vehicle in PARK/Park brake RELEASED/Headlamps in AUTO/All doors/tailate closed

Door Ajar Switch

Inputs

On/Off

Off

Passenger Door Module (PDM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF/Vehicle in PARK/Park brake RELEASED/Headlamps in AUTO/All doors/tailate closed

Door Ajar Switch

Inputs

On/Off

Off

Lift Gate Module (LGM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON/Engine OFF/Vehicle in PARK/Park brake RELEASED/Headlamps in AUTO/All doors/tailate closed

Liftgate Ajar Switch

Data

Ajar/Closed

Closed

Liftglass Ajar Switch

Data

Ajar/Closed

Closed