GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Electronic Brake Control Module (EBCM)

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition is ON, Engine OFF, and Vehicle is Stationary

ABS Equipped

ID Information

Numeric

Varies

Battery Voltage

Data Display

Volts

B+

BFC Option Config. Num.

ID Information

Numeric

Varies

Electronic Brake Control Module (EBCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition is ON, Engine OFF, and Vehicle is Stationary

ABS Active

Data Display

Yes/No

No

ABS Relay Command

Data Display

On/Off

On

ABS Relay Feedback

Data Display

On/Off

On

ABS Warning Lamp

Data Display

On/Off

Off

Brake Fluid Level

Data Display

Low/OK

OK

Brake Switch Status

Data Display

Applied/Released

Released

Configuration ID

ID Information

Numeric

Varies

DE Base Part Number

ID Information

Numeric

Varies

DE Build Sequence Number

ID Information

Numeric

Varies

DE Calibration Part Number

ID Information

Numeric

Varies

DE End Model Part Number

ID Information

Numeric

Varies

DE ROM Part Number

ID Information

Numeric

Varies

DRP Active

Data Display

Yes/No

No

DRP Disabled

Data Display

Yes/No

No

DRP Equipped

ID Information

Yes/No

Varies

DRP Switched Battery Voltage

Data Display

Active/Inactive

Inactive

Ignition Voltage

Data Display

Volts

B+

Julian Date Code

ID Information

Numeric

Varies

Left Front Wheel Speed

Data Display

km/h or mph

0

Left Rear Wheel Speed

Data Display

km/h or mph

0

LF Inlet Valve Solenoid

Data Display

Active/Inactive

Inactive

LF Outlet Valve Solenoid

Data Display

Active/Inactive

Inactive

LR Inlet Valve Solenoid

Data Display

Active/Inactive

Inactive

LR Outlet Valve Solenoid

Data Display

Active/Inactive

Inactive

Pump Motor Commanded State

Data Display

On/Off

Off

Pump Motor Feedback State

Data Display

On/Off

Off

Red Brake Lamp

Data Display

On/Off

Off

RF Inlet Valve Solenoid

Data Display

Active/Inactive

Inactive

RF Outlet Valve Solenoid

Data Display

Active/Inactive

Inactive

Right Front Wheel Speed

Data Display

km/h or mph

0

Right Rear Wheel Speed

Data Display

km/h or mph

0

Rough Road Parameter

Data Display

g

0.00

RR Inlet Valve Solenoid

Data Display

Active/Inactive

Inactive

RR Outlet Valve Solenoid

Data Display

Active/Inactive

Inactive

Switched Battery Voltage

Data Display

Volts

B+

System ID

ID Information

Numeric

Varies

Vehicle Speed

Data Display

km/h or mph

0