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

Battery Voltage

Data Display

Volts

B+

Low Tire Reset

Data Display

On/Off

Off

Software Part Number

Module Information

Numeric

Varies

TCS Switch

Data Display

On/Off

Off

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

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

Brake Temp Status

TCS Data

Normal/Over Temp

Normal

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

ABS Data

Yes/No

No

DRP Disabled

ABS Data

Yes/No

No

DRP Equipped

ID Information

Yes/No

Varies

DRP Switched Battery Voltage

ABS Data

Volts

12

EBCM To PCM Requested

    • ETS Data
    • TCS 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

Varies

ETS Status

ETS Data

Enable/Disable

Enabled

ETS Warning Lamp

ETS Data

On/Off

Off

Ignition Voltage

ABS Data

Volts

12

Julian Date Code

ID Information

Year/Day

Varies

Left Front Wheel Speed

    • ABS Data
    • ETS Data
    • TCS Data
    • TIM Data

km/h or mph

0

Left Rear Wheel Speed

    • ABS Data
    • ETS Data
    • TCS Data
    • TIM Data

km/h or mph

0

LF Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

LF Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

LF Rotor Temperature

TCS Data

°C/°F

24°C (75°F)

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

Yes/No

No

Monitor Mode 2

TIM Data

Yes/No

No

PCM to EBCM Delivered

    • ETS Data
    • TCS Data

%

10%

Pump Motor Commanded State

ABS Data

On/Off

Off

Pump Motor Feedback State

ABS Data

On/Off

Off

Red Brake Lamp

ABS Data

On/Off

Off

RF Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RF Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RF Rotor Temperature

TCS Data

°C/°F

24°C (75°F)

RR Inlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

RR Outlet Valve Solenoid

ABS Data

Active/Inactive

Inactive

Right Front Wheel Speed

    • ABS Data
    • ETS Data
    • TCS Data
    • TIM Data

km/h or mph

0

Right Rear Wheel Speed

    • ABS Data
    • ETS Data
    • TCS Data
    • TIM Data

km/h or mph

0

Rough Road Parameter

    • ABS Data
    • TCS Data

g

0

Switched Battery Voltage

ABS Data

Volts

12

System ID

ID Information

Numeric

Varies

TCS Active

TCS Data

Yes/No

No

TCS Active Lamp

TCS Data

On/Off

Off

TCS Disable Lamp

TCS Data

On/Off

Off

TCS Enable Status

TCS Data

Enable/Disable

Enable

TCS Equipped

ID Information

Yes/No

Varies

TCS Failed

TCS Data

Yes/No

No

TCS Warning Lamp

TCS Data

On/Off

Off

TIM Equipped

ID Information

Yes/No

Varies

TIM Reset Switch

TIM Data

On/Off

Off

VES Actuator Commanded

VES Data

Amps

0.128

VES Actuator Feedback

VES Data

Amps

0.128

VSES Equipped

ID Information

Yes/No

Varies

Vehicle Speed

    • ABS Data
    • ETS Data
    • TCS Data
    • VES 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

Software Version

Module Information

Numeric

Varies

Antilock Lamp

Data Display

On/Off

Off

Ignition 0

Data Display

Volts

B+

Low Tire Lamp

Data Display

On/Off

Off

Low Trac. Lamp

Data Display

On/Off

Off

Traction Off Lamp

Data Display

On/Off

Off

PROM ID

Module Information

Numeric

Varies

Vehicle Speed

Data Display

mph/km/h

0

Powertrain Control Module (PCM)

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Ignition ON, Engine OFF, and vehicle is stationary

TCS Circuit History

Output Driver Data

Numeric

Varies

TCS Circuit Status

Output Driver Data

OK/Fault

OK

Torque Delivered Signal

Engine Data 2

%

10

Torque Request Signal

Engine Data 2

%

90

Traction Control

Transmission Display

Active/Inactive

Inactive

Traction Control Status

Engine Data 2

Active/Inactive

Inactive

Vehicle Speed

Transmission Display

mph/km/h

0