GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Powertrain Control Module (PCM)
Table 3: Theft Deterrent Module (Export, RPO AU8)

Theft Deterrent System - (Domestic, Passlock)

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON/Engine OFF/Vehicle in PARK/Headlamps in AUTO

Auto. Learn Timer

Security Data

Seconds

0 Seconds

Battery Voltage

Data

Volts

Varies

Content Theft State

Security Data

Off/Idle/Armed/RFA Arm Delay/Alarm

Off

Content Theft Lamp

Security Data

Off/On/Flashing

Off

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

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

Operating Conditions: 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

Immobilizer (Export, RPO AU8)

Theft Deterrent Module (Export, RPO AU8)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, Engine OFF

8-Digit GM Part Number

ID Information

Numeric

Varies

Auto Learn Counter

Learn Key Data

Counts

Varies

Auto Learn Timer Status

Learn Key Data

Seconds

Varies

Battery Voltage

Data

Volts

Varies

Calibration ID

ID Information

Numeric

Varies

Dash Mode

Data

On/Off

Off

Export Mode

Data

On/Off

On

First Key Flag

Learn Key Data

On/Off

Off

Fuel Continue

Learn Key Data

On/Off

On

Fuel Disable Ignition Off

Learn Key Data

On/Off

Off

Ignition Counter

Data

Counts

Varies

Ignition Voltage

Data

Volts

Varies

Julian Date of Build

ID Information

Numeric

Varies

Manufacturers Enable Counter

Data

Counts

0

Master Keys Learned

Learn Key Data

Counts

Varies

No. of Learned Key Codes

Learn Key Data

Counts

2

PROM ID

ID Information

Numeric

Varies

Report Password

Data

On/Off

On

Start Disable

Data

On/Off

On

Tamper Flag

Data

On/Off

Off

Two Good Keys Flag

Learn Key Data

On/Off

Off

Valet Flag

Data

On/Off

Off

VTD Fail Enable

Data

On/Off

Off

VTD States

Data

Ignition Off/Normal decision/Learn First Key/Tamper/Monitor Key/fail Enable/Fail Enable Pend//Seedkey Lrn Pend/Seedkey Learn/Auto Learn Pend/Auto Learn/Wakeup/Learn More Keys/No Coded Key/Check Second Key/Auto Lrn. Done/Vin Check/Vin Timer

Monitor Key

Year Module Built

ID Information

Numeric

Varies