GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Powertrain Control Module (PCM)

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition in ON, Engine OFF

Auto Learn Timer Status

Security Data

Seconds

0-2550

Door Ajar Switches

Inputs

Open/Closed

Closed

His. DTC Cyc. Counts

Security Data

Counts

0-255

Key Cylinder Unlock

Inputs

On/Off

Off

Lockout Timer Status

Security Data

Seconds

0-2550

Passlock Data Voltage

Security Data

Volts

0-5V

Security Lamp State

Security Data

On/Off

Off

Seed & Key Timer Status

Security Data

Seconds

0-2550

Powertrain Control Module (PCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, Engine OFF

PCM/VCM in VTD Fail Enable

Engine Data 1

Yes/No

No

VTD Auto Learn Timer

Engine Data 1

Active/Inactive

Inactive

VTD Fuel Disable

Engine Data 1

Active/Inactive

Inactive

VTD Fuel Disable Until Ign. OFF

Engine Data 1

Yes/No

No