GM Service Manual Online
For 1990-2009 cars only

Body Control Module (BCM)

Park brake set with the ignition switch ON/ Ignition Switch in RUN/ Engine running/ Automatic Transmission in PARK/ Air Conditioning is OFF

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery Voltage

Data

Volts

Varies

EVO Desired Current @ 0 MPH

Data

ma

0

EVO Actual Current @ 0 MPH

Data

ma

0

EVO Desired Current @ 65 MPH

Data

ma

625 mA

EVO Actual Current @ 65 MPH

Data

ma

625 mA

EVO Command

Data

Counts

Varies

EVO Input Current

Data

Volts

Varies

EVOLO Feedback

Data

Volts

Varies

EVOHI Feedback

Data

Volts

Varies

Steering Wheel Position

Data

Volts

Varies

Steering Wheel Rate

Data

RPM

Varies

Vehicle Speed

Data

MPH

Varies

EVO PWM

Special Functions

%

0% = full assist