GM Service Manual Online
For 1990-2009 cars only

The following table lists the parameters displayed by the Scan tool. The parameters are displayed by ABS/TCS data, switch inputs, exterior lamps, interior lamps, door locks, wiper/washer and security data groups.

ABS/TCS Data Scan Tool Data List

Scan Tool Parameter

Units Displayed

Battery 1

Volts

Traction Active

Yes/No

Traction Control Status

On/Off

ABS Fault

Yes/No

Traction LED Command

On/Off

Traction LED Feedback

High/Low

Park Brake Switch

On/Off

Fuel Gauge Position

%

Coolant Gauge Position

%

Displayed Odometer

km/miles

Switch Inputs Scan Tool Data List

Scan Tool Paramter

Units Displayed

Battery 1

Volts

Driver Door Switch

High/Low

Pass. Door Switches

High/Low

Key In Ignition

Yes/No

Decklid Ajar Switch

High/Low

Oil Life Reset Switch

High/Low

Park Brake Switch

On/Off

Low Coolant

Yes/No

Low Brake Fluid

Yes/No

A/C Request (RPO C60)

Yes/No

High Beam Input = Off (2002)

Yes/No

High Beam Input = DRL (2002)

Yes/No

High Beam Input = High (2002)

Yes/No

Low Beam Input = Off (2003)

Yes/No

Low Beam Input = DRL (2003)

Yes/No

Low Beam Input = High (2003)

Yes/No

Low Beam Switch

On/Off

Parklamp Switch

On/Off

Lock Switch

On/Off

Unlock Switch

On/Off

Front Wiper Switch

On/Off

Rear Wiper Switch

On/Off

Rear Defog Switch (RPO C60)

On/Off

Rear Defog Relay Cmd.

On/Off

Rear Defog Relay Fdbk.

High/Low

Shifter Unlock Cmd.

On/Off

Shifter Unlock Fdbk.

High/Low

Exterior Lamps Scan Tool Data List

Scan Tool Parameter

Units Displayed

Battery 1

Volts

High Beam Input = Off (2002)

Yes/No

High Beam Input = DRL (2002)

Yes/No

High Beam Input = High (2002)

Yes/No

Low Beam Input = Off (2003)

Yes/No

Low Beam Input = DRL (2003)

Yes/No

Low Beam Input = High (2003)

Yes/No

Low Beam Switch

On/Off

Parklamp Switch

On/Off

DRL Relay Command

On/Off

DRL Relay Feedback

High/Low

ALC Light Sensor

Volts

Parklamp Input

Volts

Parklamp Cmd.

On/Off

Parklamp Fdbk.

High/Low

Headlamp Cmd.

On/Off

Headlamp Fdbk.

High/Low

Interior Lamps Scan Tool Data List

Scan Tool Parameter

Units Displayed

Battery 1

Volts

Inadvertent Power Cmd.

On/Off

Inadvertent Power Fdbk.

High/Low

Dome Lamp Command

On/Off

Dome Lamp Feedback

High/Low

Driver Door Switch

High/Low

Pass. Door Switches

High/Low

Key In Ignition

Yes/No

I/P Dimmer Input

Volts

I/P Dimmer Output

% Duty Cycle

Door Locks Scan Tool Data List

Scan Tool Parameter

Units Displayed

Battery 1

Volts

Driver Unlock Relay Cmd.

On/Off

Driver Unlock Relay Fdbk.

High/Low

Pass. Unlock Relay Cmd.

On/Off

Pass. Unlock Relay Fdbk.

High/Low

Lock All Relay Cmd.

On/Off

Lock All Relay Fdbk.

High/Low

Remote Lock Command

Yes/No

Remote Unlock Command

Yes/No

Remote Panic Command

Yes/No

Remote Trunk Command

Yes/No

Lock Switch

On/Off

Unlock Switch

On/Off

Trunk Release Switch

On/Off

Trunk Release Sol. Cmd.

On/Off

Trunk Release Sol. Fdbk.

High/Low

Wiper/Washer Scan Tool Data List

Scan Tool Parameter

Units Displayed

Battery 1

Volts

Wiper Delay Input

Volts

Wiper Delay 1

Yes/No

Wiper Delay 2

Yes/No

Wiper Delay 3

Yes/No

Front Wiper Switch

On/Off

Front Wiper Relay Cmd.

On/Off

Front Wiper Relay Fdbk.

High/Low

Rear Wiper Switch

On/Off

Rear Wiper Relay Cmd.

On/Off

Rear Wiper Relay Fdbk.

High/Low

Front Washer Motor Input

On/Off

Rear Washer Motor Input

On/Off

Washer Fluid Level

Low/OK

Security Data Scan Tool Data List

Scan Tool Parameter

Units Displayed

Battery 1

Volts

Ignition 1 Input

High/Low

Accessory

High/Low

Passlock Input

Volts

Passlock Power Fdbk.

High/Low

Key Learn Enabled

Yes/No

Security LED

On/Off/Flash

Horn Relay Command

On/Off

Horn Relay Feedback

High/Low

Passlock Timer

Seconds

Auto-Learn Timer

Seconds

Decklid Ajar Switch

High/Low

Trunk Release Switch

On/Off