GM Service Manual Online
For 1990-2009 cars only

The scan tool data list contains all the instrument panel, gages, and console related parameters that are available on the scan tool. The parameters in the list are arranged in alphabetical order. The data list column indicates the location of the parameter within the scan tool menu selections.

Use the scan tool data lists as directed by a diagnostic table or in order to supplement the diagnostic procedures. Begin all of the diagnostic procedures with the Diagnostic System Check - Vehicle.

Use the scan tool data lists only after the following is determined:

    • There is no published DTC procedure nor published symptom procedure for the customer concern.
    • The DTC or symptom procedure indicated by the diagnostic system check does not resolve the customer concern.

The typical data values are obtained from a correctly operating vehicle under the conditions specified in the first row of the scan tool data list table. Comparison of the parameter values from the suspect vehicle with the typical data values may reveal the source of the customer concern.

Instrument Panel Cluster Scan Tool Data Parameters

Parameter

Operating Conditions

Expected Value

Definition

Ignition is ON, engine OFF, and vehicle is stationary

ABS Telltale

Systems check or fault with the system

On

This parameter displays On, which will command the telltale lamp on the instrument cluster to illuminate when doing a systems check or a fault is logged.

Systems are normal

Off

Alternator Telltale

Fault with the system

On

This parameter displays On, which will command the telltale lamp on the instrument cluster to illuminate when there is a fault with the system.

Systems are normal

Off

Backup System Power Mode

Back up power system activated

Active

This parameter displays the status of the backup system power mode.

Back up power system deactivated

Inactive

Battery Voltage

--

12 Volts

The scan tool displays 0-14 Volts.

The scan tool displays approximately 12 Volts when the ignition is on

Battery State

 

Valid

 

Invalid

Brake System Telltale

Systems check or fault with the system

On

This parameter displays On, which will command the telltale lamp on the instrument cluster to illuminate when doing a systems check or a fault is logged.

Systems are normal

Off

Distance To Arrival

--

Miles

This parameter displays the remaining distance till arrival, based off the user's selection.

Door Open Telltale

Door open or ajar

On

This parameter displays On, which will command the telltale lamp on the instrument cluster to illuminate when a door is open or not closed correctly.

Door closed correctly

Off

Drivers Side Seat Belt Telltale

Seat belt not being worn

On

This parameter displays On, which will command the telltale lamp on the instrument cluster to illuminate when doing a systems check or a fault is logged.

Seat belt being worn

Off

Displayed Fuel Level

--

%

This parameter displays fuel level as a percentage

Engine Coolant Temperature

--

[ordm ] F

This parameter displays the current temperature of the coolant in the vehicle in degrees.

Engine Speed

--

RPM

This parameter displays the speed of the crankshaft as calculated by the control module based on inputs from the crankshaft position (CKP) sensor. The scan tool will display the engine speed in revolutions per minute (RPM).

FOB Programmed State

--

Active

This parameter displays the state of key fob

Inactive

Fr. Fog Light Telltale

Front fog lamps activated

On

This parameter displays On, which will command the telltale lamp on the instrument cluster to illuminate when turned on.

Front fog lamps deactivated

Off

Fuel Used A

--

Gallon

This parameter displays the total litres of fuel used since the trip computer was reset.

Fuel Used B

--

Gallon

This parameter displays the total litres of fuel used since the trip computer was reset.

Fuel Range

 

Miles

This parameter displays range remaining in miles.

High Beam Telltale

High beam activated

On

This parameter displays On, which will command the telltale lamp on the instrument cluster to illuminate when turned on.

High beam deactivated

Off

Ignition Switch

Ignition is in OFF position

Off

This parameter displays the current status of the ignition switch.

Ignition is in ACC position

Off

Ignition is in RUN position

On

Ignition is in CRANK position

On

Left Scroll Switch

--

Counts

This parameter displays the position of the left scroll switch.

 

Odometer

--

Miles

This parameter displays the odometer reading which calculates the distance travelled based on information from the ECM.

Phone

Phone activated

On

This parameter displays the commanded state of a connected mobile phone.

Phone deactivated

Off

Power Mode

--

On

 

Off

Remaining Fuel

--

%/Gal

This parameter displays the remaining fuel as either a percentage or in gallons.

Right Scroll Switch

--

Counts

This parameter displays the position of the right scroll switch.

 

Shift Up Indicator

Shift up indicator activated

On

This parameter displays the status of the shift up light.

Shift up indicated deactivated

Off

SIR Air Bag Telltale

Systems check or fault with the system

On

This parameter displays On, which will command the telltale lamp on the instrument cluster to illuminate when doing a systems check or a fault is logged.

Systems are normal

Off

Steering Wheel Control

Left scroll pressed

Menu Enter

This parameter displays the position of the steering wheel switch.

Left scroll in idle position

Off

Time To Arrival

--

Minutes

This parameter displays the total days remaining till arrival.

Time To Arrival

--

00:00:00 (hh:mm:ss)

This parameter displays the time to arrival at a programmed destination.

Tyre Pressure Monitoring Telltale

Systems check or fault with the system

On

This parameter displays On, which will command the telltale lamp on the Instrument Cluster to illuminate when doing a systems check or a fault is logged.

System is normal

Off

Trip A Odometer

--

Miles

This parameter displays the total miles travelled since last reset.

Trip A Time

--

00:00:00 (hh:mm:ss)

This parameter will display the engine running time during this ignition cycle.

Trip A Time

--

Minutes

This parameter displays the total minutes remaining till arrival.

Trip B Odometer

--

Miles

This parameter displays the total miles travelled since last reset.

Trip B Time

--

Minutes

This parameter displays the total minutes remaining till arrival.

Trip B Time

--

00:00:00 (hh:mm:ss)

This parameter will display the engine running time during this ignition cycle.

Turn Left Signal Telltale

Turn left signal activated

On

This parameter displays On, which will command the telltale lamp on the instrument cluster to illuminate when the turn signal switch is activated.

Turn left signal deactivated

Off

Turn Right Signal Telltale

Turn right signal activated

On

This parameter displays On, which will command the telltale lamp on the instrument cluster to illuminate when the turn signal switch is activated.

Turn left signal deactivated

Off

Vehicle Speed

--

Mph

This parameter indicates the vehicle speed calculated by the control module based on an input from the vehicle speed sensor (VSS). The scan tool will display a high value at higher vehicle speeds, and a low value at lower vehicle speeds.

Washer Switch

--

On

This parameter displays the position of the washer switch.

Off

Instrument Panel Cluster Scan Tool Output Controls

Scan Tool Output Control

Additional Menu Selection(s)

Description

Automatic Occupancy Sensor Indicator Lamp

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Alternator Status

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Anti Lock Telltale

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Backlight Dimming

Special Functions IPC Illumination Test

The scantool commands the IPC to dim the backlight on the instrument cluster when turned ON.

Brake Lamp Telltale

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Coolant Gauge Sweep

Special Functions Output control

The scantool commands the IPC to move the coolant gauge to full Hot or Cold.

Display Test

Special Functions IPC Illumination Test

The scantool commands the IPC to turn on all the telltale lamps on the Instrument cluster.

Door Ajar

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Daytime Running Lamps

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Front Fog Lamp Relay

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Fuel Gauge Sweep

Special Functions Output control

The scantool commands the IPC to the fuel gauge to the position set by the operator.

High Beam Telltale

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Left Turn Signal

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Passenger Seat Belt Command

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Passenger Seat Belt Indicator

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

MFD Test

Special Functions IPC Illumination Test

The scantool commands the IPC to turn ON all the telltale lamps on the MFD.

MPH Lamp

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Pointer Dimming

Special Functions IPC Illumination Test

The scantool commands the IPC to dim all pointers when turned ON.

Right Turn Signal

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Seatbelt Telltale

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Segment Check

Special Functions IPC Illumination Test

The scantool commands the IPC to illuminate each segment.

SIR Telltale

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Skip Shift Lamp Command (If equipped)

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster. (If equipped)

Speed Gauge Sweep Test

Special Functions Output control

The scantool commands the IPC to move the Speedometer as commanded by the operator

Tachometer Gauge Sweep

Special Functions Output control

The scantool commands the IPC to move the Tachometer as commanded by the operator

Tyre Pressure Lamp

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.

Up shift Lamp

Special Functions Lamp Test

The scantool commands the IPC to turn ON the telltale lamp on the instrument cluster.