GM Service Manual Online
For 1990-2009 cars only

The scan tool data lists contain 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.

Parameter

Operating Conditions

Expected Value

Definition

Ignition is ON, engine OFF, and vehicle is stationary

ABS Telltail

--

On

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

--

Off

Alternator Telltail

--

On

This parameter displays On, which will command the telltail lamp on the Instrument Cluster to illuminate when there is a fault with the system.

--

Off

Backup System Power Mode

--

Enabled

This parameter displays the status of the Backup System Power Mode.

--

Disabled

Battery Voltage

--

Battery Volts

The scan tool displays 0-14 Volts.

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

Brake Fluid Level Switch

--

On

This parameter displays On, which will command the telltail lamp on the Instrument Cluster to illuminate when there is a fault with the system.

--

Off

Brake System Telltail

On

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

Off

Current Trip Display

--

--

This parameter displays the total distance travelled so far.

Distance To Arrival

--

Km

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

Door Open Telltail

--

On

This parameter displays On, which will command the telltail lamp on the Instrument Cluster to illuminate when a door is open or not closed correctly.

--

Off

Drivers Side Seat Belt Telltail

On

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

Off

Engine Coolant Temperature

--

--

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

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 diplay the Engine speed in revolutions per minute (RPM).

Fixed Service Interval

--

This parameter displays the interval of the fixed service.

--

Fr. Fog Light Telltail

--

On

This parameter displays On, which will command the telltail lamp on the Instrument Cluster to illuminate when turned on..

--

Off

Fuel Used A

--

Litres

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

Fuel Used B

--

Litres

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

High Beam Telltail

On

This parameter displays On, which will command the telltail lamp on the Instrument Cluster to illuminate when turned On.

Off

Ignition Switch

--

On - Off

This parameter displays the current status of the ignition switch.

--

Off - On

Left Scroll Switch

--

Active

This parameter displays the position of the Left Scroll Switch.

--

Inactive

Odometer

--

Km

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

Phone

--

On

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

--

Off

Remaining Fuel

%/ L

This parameter displays the Remaining Fuel as either a percentage or in Litres.

Right Scroll Switch

--

Counts

This parameter displays the position of the Right Scroll Switch.

--

--

Shift Up Light

--

On

This parameter displays the status of the Shift Up Light.

--

Off

SIR Air Bag Telltail

On

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

Off

Steering Wheel Switch

--

Menu Enter

This parameter displays the position of the Steering Wheel Switch.

--

Off

System Power Mode

Ignition 1 off

On -- Off

Display dependant on switch locator

Acc Ignition 2

Acc -- Crank

Time To Arrival

--

day(s)

This parameter displays the total days remaining till Arrival.

Tyre Pressure Monitoring Telltail

--

On

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

--

Off

Trip A Distance

--

Km

This parameter displays the total kilometers travelled since last reset.

Trip A Time

--

day(s)

This parameter will display the total days remaining till Arrival.

Trip A Time

--

00:00:00 (hh:mm:ss)

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

Trip B Distance

--

Km

This parameter displays the total kilometres travelled since last reset.

Trip B Time

--

day(s)

This parameter displays the total days 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 Telltail

--

On

This parameter displays On, which will command the telltail lamp on the Instrument Cluster to illuminate when the turn signal switch is activated.

--

Off

Time To Arrival

--

00:00:00 (hh:mm:ss)

This parameter displays the Time to Arrival at a programmed destination.

Vehicle Speed

--

Km/h

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 Level Switch

--

On

This parameter displays the position of the Washer Level Switch.

--

Off

Turn Right Signal Telltail

--

On

This parameter displays On, which will command the telltail lamp on the Instrument Cluster to illuminate when the turn signal switch is activated.

--

Off