GM Service Manual Online
For 1990-2009 cars only

Scan Tool Parameter

Data List

Units Displayed

Typical Data Value

Operating Conditions: Ignition ON, Engine OFF, Transmission in Neutral or Park, and Brake Unapplied

ABS Pump Motor

ABS

VSES

On/Off

Off

Brake Switch

ABS

VSES

Applied/Released

Released

Deceleration Sensor (AWD Models)

All Wheel Drive

Low/Middle/High

Low

Deceleration Sensor (TCS Equipped)

ABS

All Wheel Drive

VSES

g

0.0

Engine RPM

VSES

rpm

0

Ignition Voltage

ABS

VSES

Low/normal/High

Varies

Left Front Wheel Speed

ABS

VSES

mph/km/h

0

Left Rear Wheel Speed

ABS

VSES

mph/km/h

0

LF Hold Solenoid

ABS

VSES

On/Off

Off

LF Release Solenoid

ABS

VSES

On/Off

Off

LF Wheel Speed

ABS

VSES

Normal/Open

Normal

LR Hold Solenoid

ABS

VSES

On/Off

Off

LR Release Solenoid

ABS

VSES

On/Off

Off

LR Wheel Speed

ABS

VSES

Normal/Open

Normal

RF Hold Solenoid

ABS

VSES

On/Off

Off

RF Release Solenoid

ABS

VSES

On/Off

Off

RF Wheel Speed

ABS

VSES

Normal/Open

Normal

Right Front Wheel Speed

ABS

VSES

mph/km/h

0

Right Rear Wheel Speed

ABS

VSES

mph/km/h

0

RR Hold Solenoid

ABS

VSES

On/Off

Off

RR Release Solenoid

ABS

VSES

On/Off

Off

RR Wheel Speed

ABS

VSES

Normal/Open

Normal

Steering Position Sensor

VSES

°/sec

Varies

Steering Position Sensor

VSES

Normal/Open

Normal

TCS Switch

VSES

Applied/Released

Released

Throttle Angle

VSES

%

Varies

Valve Relay State

ABS

VSES

On/Off

On

Vehicle Speed

ABS

VSES

mph/km/h

0

Yaw Rate Sensor

VSES

°/sec

0

Yaw Rate Sensor

VSES

Normal/Open

Normal