GM Service Manual Online
For 1990-2009 cars only

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

CTD Status

Theft Data

Current State

Disarmed

Current CTD Trigger

Theft Data

Event

None

Hood Closed Switch

Theft Data

Active/Inactive

Active

Hood Open Switch

Theft Data

Active/Inactive

Inactive

Theft LED

Theft Data

Current State

Off


Theft Deterrent Module

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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

Power Mode

TDM Data

Current State

Run

Ignition Voltage Signal

TDM Data

Not Present/Present

Present

TDM State

TDM Data

Event

Normal

Previous TDM State

TDM Data

Event

Normal

Telltale Status

TDM Data

Current State

On

Immobilization

TDM Data

Active/Inactive

Inactive

Start Disabled

TDM Data

Yes/No

No

Tamper Status

TDM Data

Active/Inactive

Inactive

Theft Problem

TDM Data

Yes/No

No

Auto Learn Counter

TDM Data

Counts

Varies

Auto Learn Timer

TDM Data

min

Varies

Total Keys Learned

Learn Key Data

Counts

Varies

Master Keys Learned

Learn Key Data

Counts

Varies

Valid Key

Learn Key Data

Yes/No

Yes

Transponder Key

Learn Key Data

Present/Not Present

--

Fleet Vehicle

Learn Key Data

Yes/No

--

Learn Coded Key

Learn Key Data

Yes/No

No

PCM Password Learning

Powertrain Status

Enabled/Disabled

Disabled

PCM Auto. Learn Timer

Powertrain Status

Active/Inactive

Inactive

Powertrain DTC

Powertrain Status

Yes/No

No

Security Code Programmed

Powertrain Status

Yes/No

Yes

Immobilizer Programmed

Powertrain Status

Yes/No

Yes