GM Service Manual Online
For 1990-2009 cars only
Table 1: Body Control Module
Table 2: Electronic Brake Control Module (EBCM)
Table 3: Powertrain Control Module (PCM)

Body Control Module

Ignition ON, engine OFF.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery Voltage

Data

Volts

12

Traction Switch

Inputs

On/Off

Off

Electronic Brake Control Module (EBCM)

Ignition is ON, engine OFF, and steering wheel is straight.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

8-Digit GM Part Number

Controller Information 1

Numeric

Varies

ABS Active

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

Yes/No

No

ABS Active Indicator

No Phase

On/Off

Off

ABS Failed

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

Yes/No

No

ABS Failed Lamp Command

Phase 1-4

On/Off

Off

ABS Reference Speed

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data
    • Phase 1-4
    • VSES Data

km/h or mph

0

ABS Warning Indicator

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

On/Off

Off

Brake Temp Status

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data

Normal/Over Temp

Normal

Calibration ID

Controller Information 1

Numeric

Varies

DE Base Part Number

Controller Information 2

Numeric

Varies

DE Build Sequence Number

Controller Information 1

Numeric

Varies

DE Calibration Part Number

Controller Information 2

Numeric

Varies

DE End Model Part Number

Controller Information 2

Numeric

Varies

DE ROM Part Number

Controller Information 2

Numeric

Varies

Delivered Torque PWM Duty Cycle

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data

%

10

DRP Active

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

Yes/No

No

DRP Disabled

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

Yes/No

No

Dual Analog SWPS Input A

VSES Data

Volts

Varies

0-5

Dual Analog SWPS Input B

VSES Data

Volts

Varies

0-5

Engine RPM

Phase 1-4

RPM

0

Engine Type

Phase 1-4

Type

Varies

Estimated Trans. Gear

Phase 1-4

Park, Reverse, Neutral, First, Second, Third, Fourth

Park

Extended Travel Brake Switch

    • DRP/ABS/TCS/TIM Data
    • Phase 1-4

Applied/Released

Released

Ignition Voltage

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

Volts

12

Intake Air Temperature

Phase 1-4

°C/°F

24°C (75°F)

Julian Date Code

Controller Information 1

Numeric

Varies

Lateral Acceleration

Phase 1-4

g

0

Lateral Accelerometer Input

VSES Data

Volts

2.5

Lateral Accelerometer - Engineering Units

VSES Data

g

0

LF Rotor Temperature

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data

°C/°F

24°C (75°F)

LF Wheel Speed

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data
    • VSES Data

km/h or mph

0

LR Wheel Speed

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data
    • VSES Data

km/h or mph

0

Manufacturing Shift Info.

Controller Information 1

Numeric

Varies

Manufacturing Site

Controller Information 1

Alpha

Varies

Powertrain TCS Failure

Phase 1-4

Yes/No

No

PROM ID

Controller Information 1

Numeric

Varies

Pump Motor Feedback Voltage

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

Volts

12

Pump Motor Relay Commanded State

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

On/Off

Off

Pump Motor Relay Feedback State

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

On/Off

Off

Red Brake Warning Indicator

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data
    • Phase 1-4

On/Off

Off

Requested Torque PWM Duty Cycle

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data

%

90

RF Rotor Temperature

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data

°C/°F

24°C (75°F)

RF Wheel Speed

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data
    • VSES Data

km/h or mph

0

Rough Road Parameter

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data
    • Phase 1-4

g

0

RR Wheel Speed

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data
    • VSES Data

km/h or mph

0

Service Stability System

Phase 1-4

On/Off

Off

Solenoid Relay Commanded State

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

On/Off

On

Solenoid Relay Feedback State

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

On/Off

On

Stability System Active

No Phase

On/Off

Off

State of Health Present

Phase 1-4

Yes/No

Yes

Steering Wheel Angle

VSES Data

°

0

Stop Lamp Switch

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data
    • Phase 1-4

Applied/Released

Released

Switched System Battery Voltage

    • DRP/ABS Data
    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data
    • DRP/ABS/TIM Data

Volts

12

System Power Mode

Phase 1-4

Run, Crank, Accessory, Unlock, Off Awake, RAP Unlock, RAP

Run

TCC/Brake Switch Active

Phase 1-4

Yes/No

No

TCS Active

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data

Yes/No

No

TCS Active Indicator/Message

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data

On/Off

Off

TCS Active Message Command

No Phase

On/Off

Off

TCS Equipped

Phase 1-4

Yes/No

Varies

TCS Failed

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data

Yes/No

No

TCS Failed Lamp Command

Phase 1-4

On/Off

Off

TCS Off Lamp Command

No Phase

On/Off

Off

TCS On/Off Switch

No Phase

On/Off

Off

TCS Warning Indicator/Message

    • DRP/ABS/TCS Data
    • DRP/ABS/TCS/TIM Data

On/Off

Off

Temporary Inhibit of TCS

Phase 1-4

Yes/No

No

TPS - Pedal Position

Phase 1-4

%

0

Traction Ready Message Command

No Phase

On/Off

Off

Traction Suspended Message Comm.

No Phase

On/Off

Off

Transmission Type

Phase 1-4

Type

Varies

Vehicle Yaw Rate - Engineering Units

VSES Data

°/sec

2.4

VIN Packet #2

Phase 1-4

Alphanumeric

Varies

VSES Active

    • Phase 1-4
    • VSES Data

Yes/No

No

VSES Active Indicator/Message

VSES Data

On/Off

Off

VSES Equipped

Phase 1-4

Yes/No

Varies

VSES Failed

VSES Data

Yes/No

No

VSES Failed Indicator/Message

VSES Data

On/Off

Off

VSES Is Centered

VSES Data

Yes/No

No

Yaw Rate Sensor Input

VSES Data

Volts

2.5

Powertrain Control Module (PCM)

Ignition ON, engine OFF.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

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 Data

Active/Inactive

Inactive

Traction Control Status

Engine Data 2

Active/Inactive

Inactive