GM Service Manual Online
For 1990-2009 cars only
Table 1: Driver Door Module (DDM) Data List
Table 2: Powertrain Control Module (PCM)
Table 3: Remote Function Actuator (RFA) Module
Table 4: Vehicle Theft Deterrent (VTD) Module Data List

Driver Door Module (DDM) Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition On, Engine OFF

Drive Door Cylinder Sw.

Inputs

Idle/Unlock

Idle

Driver Dome/Buzzer Sw.

Inputs

On/Off

Off

LR Dome/Buzzer Switch

Inputs

On/Off

Off

Pass. Dome/Buzzer Sw.

Inputs

On/Off

Off

Pass. Door Cylinder Sw. (Not Used)

Inputs

Idle/Unlock

Idle

RR Dome/Buzzer Switch

Inputs

On/Off

Off

Powertrain Control Module (PCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

Remote Function Actuator (RFA) Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF

Battery Voltage

Data

Volts

Varies

Exterior Lamp Output

Outputs

On/Off

Off

Horn Output

Outputs

On/Off

Off

Key in Ignition

Inputs

Yes/No

Yes

Security Lamp Output

Outputs

On/Off

Off

Theft Tamper Switch (Not Used)

Inputs

On/Off

Off

Vehicle Theft Deterrent (VTD) Module Data List

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition On, Engine OFF

8-Digit GM Part Number

Module Information

Numeric

Varies

# of Learned Key Codes

Data

1-10

4

Auto Learn Timer

Data

Numeric

10 min

Ignition Counter

Data

Numeric

0

Manufacturers Enable Counter

Data

Numeric

0

PROM ID

Module Information

Numeric

Varies

Security Lamp Status

Inputs

On/Off

Off

Seed and Key Timer

Data

Numeric

0:00 sec