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)
Table 4: Powertrain Control Module (PCM)

Body Control Module (BCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF, and Vehicle is Stationary

ABS Equipped

Option Configuration

Yes/No

Yes or No

BCM Option Config. No.

Controller Information

Numeric

Varies

Calibration ID

Controller Information

Numeric

Varies

ETS Equipped

Option Configuration

Yes/No

Yes or No

TIM System Enabled

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

Yes/No

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

Auto Learn Mode Active

TIM Data

Yes/No

No

Brake Fluid Level

ABS Data

OK/Low

OK

Brake Switch Status

ABS Data

Applied/Released

Released

Configuration ID

ID Information

Alphanumeric

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 Equipped

ID Information

Yes/No

Yes or No

EBCM To PCM Requested

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

Enabled/Disabled

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
    • TIM Data

mph/km/h

0

Left Rear Wheel Speed

    • ABS Data
    • ETS Data
    • TIM 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

Low Tire Pressure

TIM Data

Yes/No

No

Monitor Mode 1

TIM Data

Active/Inactive

Inactive

Monitor Mode 2

TIM Data

Active/Inactive

Inactive

PCM To EBCM Delivered

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
    • TIM Data

mph/km/h

0

Right Rear Wheel Speed

    • ABS Data
    • ETS Data
    • TIM Data

mph/km/h

0

Rough Road Parameter

ABS Data

g

Varies

RF Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RF Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RR Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RR Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

Steering Position Sensor

VES Data

Volts

0.5-4.7

Switched Battery Voltage

ABS Data

Volts

B+

System ID

ID Information

Alphanumeric

Varies

TCS Equipped

ID Information

Yes/No

No

TIM Equipped

ID Information

Yes/No

Yes or No

TIM Reset Switch

TIM Data

Applied/Released

Released

Vehicle Speed

    • ABS Data
    • ETS Data
    • VES Data

mph/km/h

0

VES Actuator Commanded

VES Data

Amps

0.128

VES Actuator Feedback

VES Data

Amps

0.128

VES Equipped

ID Information

Yes/No

Yes or No

Instrument Panel Cluster (IPC)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF, and Vehicle is Stationary

Software Version

ID Information

Numeric

Varies

ABS Lamp

Data Display/Lamp Status

On/Off

Off

Low Tire Press. Lamp

Data Display/Lamp Status

On/Off

Off

Low Traction Lamp

Data Display/Lamp Status

On/Off

Off

Traction Off Lamp

Data Display/Lamp Status

On/Off

Off

Powertrain Control Module (PCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF, and Vehicle is Stationary

Torque Delivered Signal

Engine Data 2

%

10

Torque Request Signal

Engine Data 2

%

90

Traction Control

Transmission Data

Active/Inactive

Inactive

Traction Control Status

Engine Data 2

Active/Inactive

Inactive

Vehicle Speed

Transmission Data

mph/km/h

0