GM Service Manual Online
For 1990-2009 cars only

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Key On, Engine Off

Battery Voltage

BCM Data

Volts

13.0 volts

Door Lock Relay

Door Lock Data

ON/OFF

OFF

Door Lock Relay Fdbk.

Door Lock Data

Active/Inactive

Inactive

Driv Door Unlk Fdbk.

Door Lock Data

Active/Inactive

Inactive

Driver Door Unlock Relay

Door Lock Data

ON/OFF

ON

DRL Relay

Lamp Status

ON/OFF

OFF

DRL Relay Fdbk.

Lamp Status

Active/Inactive

OFF

Horn Relay

BCM Data

ON/OFF

OFF

Horn Relay Feedback

BCM Data

ON/OFF

OFF

Ignition 1

BCM Data

ON/OFF

ON

Interior Lamp Output

Lamp Status

ON/OFF

OFF

Other Door Unlock Fdbk.

Door Lock Data

Active/Inactive

Inactive

Other Door Unlock Relay

Door Lock Data

ON/OFF

OFF

Passenger Door Unlock R

Door Lock Data

ON/OFF

OFF

Trunk Rel Sol Fdbk.

Door Lock Data

Active/Inactive

OFF

Trunk Release Solenoid

Door Lock Data

Active/Inactive

Inactive