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, with the engine OFF. Transmission shift lever in the PARK position.

Ignition 0

Inputs

Volts

0-25 V

Ignition 1

Inputs

Volts

0-25 V

Park (BTSI) Relay

Outputs

ON/OFF

ON