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

Body Control Module (PZM)

Ignition ON, engine OFF.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Battery Voltage

Data

Volts

12

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

ABS Active

    • Data List 1
    • Data List 2

Yes/No

No

ABS Controller

Controller Information 1

Yes/No

Yes

ABS Failed

Data List 2

Yes/No

No

ABS Failed Lamp Command

Data Display 2 Normal Mode

Yes/No

No

ABS Warning Lamp

Data List 2

On/Off

Off

Analog Steering Wheel Position Input

Data List 2

Volts

2.0

Brake Light Switch

Data List 2

Applied/Released

Released

Brake Switch - ABS Input

Data Display 2 Normal Mode

Applied/Released

Released

Brake Switch - PCM Input

Data Display 2 Normal Mode

Applied/Released

Released

Brake Temp Status (Thermal Model Cutoff)

Data List 2

Normal/Over Temp

Normal

Brake Travel Switch

Data Display 2 Normal Mode

Applied/Released

Released

Build Sequence Number

Controller Information 1

Numeric

Varies

Calibration Part Number

Controller Information 2

Numeric

Varies

Controller Part Number

Controller Information 1

Numeric

Varies

Delivered Torque

Data List 2

%

90

Digital SWPS Phase A

Data List 2

High/Low

Varies

Digital SWPS Phase B

Data List 2

High/Low

Varies

End Model Part Number

Controller Information 2

Numeric

Varies

Extended Travel Brake Switch

Data List 2

Applied/Released

Released

ICCS2/3

Controller Information 1

Yes/No

No

ICCS2 Data Link Left

Data List 2

% High

80

ICCS2 Data Link Left

Data List 2

% Low

20

ICCS2 Data Link Right

Data List 2

% High

80

ICCS2 Data Link Right

Data List 2

% Low

20

Ignition Power

Data List 2

Volts

12

Julian Date of Build

Controller Information 1

Numeric

Varies

Lateral Accelerometer Input

Data List 2

Volts

2.5

LF Inlet Valve Solenoid

Data List 1

Inactive/Active

Inactive

LF Outlet Valve Solenoid

Data List 1

Inactive/Active

Inactive

LF Rotor Temperature

Data List 2

°C/°F

24°C (75°F)

LF TCS Isolation Valve

Data List 1

Inactive/Active

Inactive

LF TCS Prime Valve

Data List 1

Inactive/Active

Inactive

LF Wheel Speed

Data List 1

km/h or mph

0

LR Inlet Valve Solenoid

Data List 1

Inactive/Active

Inactive

LR Outlet Valve Solenoid

Data List 1

Inactive/Active

Inactive

LR Wheel Speed

Data List 1

km/h or mph

0

Motor Relay Commanded State

Data List 2

On/Off

On

Motor Relay Feedback State

Data List 2

On/Off

On

Powertrain TCS Failure

Data Display 2 Normal Mode

Yes/No

No

Requested Torque

Data List 2

%

90

RF Inlet Valve Solenoid

Data List 1

Inactive/Active

Inactive

RF Outlet Valve Solenoid

Data List 1

Inactive/Active

Inactive

RF Rotor Temperature

Data List 2

°C/°F

24°C (75°F)

RF TCS Isolation Valve

Data List 1

Inactive/Active

Inactive

RF TCS Prime Valve

Data List 1

Inactive/Active

Inactive

RF Wheel Speed

Data List 1

km/h or mph

0

ROM Part Number

Controller Information 2

Numeric

Varies

Rough Road Parameter

Data List 1

g

0

RR Inlet Valve Solenoid

Data List 1

Inactive/Active

Inactive

RR Outlet Valve Solenoid

Data List 1

Inactive/Active

Inactive

RR Wheel Speed

Data List 1

km/h or mph

0

Service Stability System

Data Display 2 Normal Mode

On/Off

Off

Solenoid Relay Commanded State

Data List 2

On/Off

On

Solenoid Relay Feedback State

Data List 2

On/Off

On

Stabilitrak Active

Data List 2

Yes/No

No

Stabilitrak Active Message

Data List 2

On/Off

Off

Stabilitrak Failed

Data List 2

Yes/No

No

Stabilitrak Steering Angle Is Centered

Data List 2

Yes/No

No

Stabilitrak Warning Message

Data List 2

On/Off

Off

Stability System Engaged

Data Display 2 Normal Mode

Yes/No

No

Stability System Engaged Message Command

Data Display 2 Normal Mode

Yes/No

No

Suspension System Failure

Data Display 2 Normal Mode

Yes/No

No

Switched Pump Battery Power

Data List 2

Volts

12

Switched System Battery Power

Data List 2

Volts

12

System ID

Controller Information 1

Number

Varies

TCS Active

    • Data List 1
    • Data List 2

Yes/No

No

TCS Active Message

Data List 2

On/Off

Off

TCS Controller

Controller Information 1

Yes/No

Yes

TCS Disable Message

Data List 2

On/Off

Off

TCS Failed

Data List 2

Yes/No

No

TCS On/Off Status

Data List 2

On/Off

Off

TCS Warning Lamp

Data List 2

On/Off

Off

Temporary Inhibit of TCS

Data Display 2 Normal Mode

Yes/No

No

Traction Control Equipped

Data Display 2 Normal Mode

Yes/No

Yes

Traction Engaged Message Comm.

Data Display 2 Normal Mode

On/Off

Off

Traction Off Message Command

Data Display 2 Normal Mode

On/Off

Off

Traction Ready Message Command

Data Display 2 Normal Mode

On/Off

Off

Traction Suspended Message Comm.

Data Display 2 Normal Mode

On/Off

Off

Vehicle Speed

Data List 1

km/h or mph

0

Yaw Rate Sensor Input

Data List 2

Volts

2.5

Powertrain Control Module (PCM)

Ignition ON, engine OFF.

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Traction Control Status

Engine Data 2

Active/Inactive

Inactive

Torque Delivered Signal

Engine Data 2

%

90

Torque Request Signal

Engine Data 2

%

90