GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module (BCM)
Table 2: Electronic Brake Control Module (EBCM)
Table 3: Instrument Panel Cluster (IPC)

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF, and vehicle is stationary

Battery Voltage

BCM Data

Volts

B+

ETS Equipped

Option Configuration

Yes/No

Yes or No

Traction Switch

BCM Data

On/Off

Off

Electronic Brake Control Module (EBCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF, and vehicle is stationary

ABS Active

ABS Data

No/Yes

No

ABS Relay Command

ABS Data

On/Off

On

ABS Relay Feedback

ABS Data

On/Off

On

ABS Warning Lamp

ABS Data

On/Off

Off

Brake Fluid Level

ABS Data

OK/Low

OK

Brake Switch Status

ABS Data

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

EBCM To PCM Requested Torque

ETS Data

%

100%

ETS Active

ETS Data

Active/Inactive

Inactive

ETS Active Lamp

ETS Data

On/Off

Off

ETS Disable Lamp

ETS Data

On/Off

Off

ETS Equipped

ID Information

Yes/No

Yes or No

ETS Status

ETS Data

Enable/Disable

Enabled

ETS Warning Lamp

ETS Data

On/Off

Off

Ignition Voltage

ABS Data

Volts

B+

Julian Date Code

ID Information

Numeric

Varies

Left Front Wheel Speed

    • ABS Data
    • ETS Data

mph/km/h

0

Left Rear Wheel Speed

    • ABS Data
    • ETS Data

mph/km/h

0

LF Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

LF Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

LR Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

LR Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

PCM To EBCM Delivered Torque

ETS Data

%

10%

Pump Motor Commanded State

ABS Data

On/Off

Off

Pump Motor Feedback State

ABS Data

On/Off

Off

Right Front Wheel Speed

    • ABS Data
    • ETS Data

mph/km/h

0

Right Rear Wheel Speed

    • ABS Data
    • ETS Data

mph/km/h

0

RF Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RF Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

Rough Road Parameter

ABS Data

g

0.00

RR Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RR Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

Switched Battery Voltage

ABS Data

Volts

B+

System ID

ID Information

Numeric

Varies

Vehicle Speed

    • ABS Data
    • ETS Data

mph/km/h

0

Instrument Panel Cluster (IPC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF, and vehicle is stationary

ABS Lamp

Data Display

On/Off

Off

Low Traction Lamp

Data Display

On/Off

Off

Traction Off Lamp

Data Display

On/Off

Off