GM Service Manual Online
For 1990-2009 cars only

The DIC comes on when the ignition is on. After a short delay the DIC will display the information that was last displayed before the engine was turned off.

If a problem is detected, a warning message will appear on the display. Pressing the trip stem on the instrument panel cluster or any of the DIC buttons will acknowledge any warning or service messages.

You should take any message that appears on the display seriously and remember that clearing the message will only make the message disappear, not correct the problem.

The DIC has different modes which can be accessed by pressing the four DIC buttons located on the center of the instrument panel, above the radio. These buttons are fuel information, trip information, customization, and select. The button functions are detailed in the following pages.

Fuel Information Button

(Fuel Information): Press this button to scroll through the fuel range, fuel used, average fuel economy, and the engine oil life system.

Fuel Range: Press the fuel information button until RANGE appears on the display. This mode shows the remaining distance you can drive without refueling. It is based on fuel economy and the fuel remaining in the fuel tank. The display will show LOW if the fuel level is low. The fuel economy data used to determine fuel range is an average of recent driving conditions. As your driving conditions change, this data is gradually updated. Fuel range cannot be reset.

Fuel Used: Press the fuel information button until FUEL USED appears on the display. This mode shows the number of gallons or liters of fuel used since the last reset of this menu item. To reset the fuel used information, press and hold the select button for one second while FUEL USED is displayed.

Average Fuel Economy: Press the fuel information button until AVG. ECON appears on the display. This mode shows how many miles per gallon (MPG), kilometers per liter (km/L), or liters per 100 kilometers (L/100 km) your vehicle is getting based on current and past driving conditions. Press and hold the select button for one second while AVG. ECON is displayed to reset the average fuel economy. Average fuel economy will then be calculated starting from that point. If the average fuel economy is not reset, it will be continually updated each time you drive.

Engine Oil Life System: Press the fuel information button until ENGINE OIL LIFE appears on the display. The engine oil life system shows an estimate of the oil's remaining useful life. It will show 100% when the system is reset after an oil change. It will alert you to change your oil on a schedule consistent with your driving conditions. Always reset the engine oil life system after an oil change. To reset the engine oil life system, see Engine Oil Life System . In addition to the engine oil life system monitoring the oil life, additional maintenance is recommended in the Maintenance Schedule in this manual. See Engine Oil and Scheduled Maintenance.

Trip Information Button

(Trip Information): Press this button to scroll through the odometer, trip odometers, tire pressures, and timer.

Odometer: Press the trip information button until ODOMETER appears on the display. This mode shows the total distance the vehicle has been driven in either miles or kilometers. Pressing the trip stem located on the instrument panel cluster with the vehicle off will also display the odometer.

Trip A:  Press the trip information button until TRIP A appears on the display. This mode shows the current distance traveled since the last reset for TRIP A in either miles or kilometers.

Trip B: Press the trip information button until TRIP B appears on the display. This mode shows the current distance traveled since the last reset for TRIP B in either miles or kilometers. To reset TRIP A or TRIP B information, press and hold the select button for one second while in one of the trip modes. This will reset the information for TRIP A or TRIP B. You can also reset the TRIP A or TRIP B while they are displayed by pressing the trip stem. If you press and hold the trip stem or the select button for more than four seconds, the display will show the distance traveled since the last ignition cycle for TRIP A or TRIP B.

Tire Pressures: On vehicles with the Tire Pressure Monitor System (TPMS), press the trip information button until TIRE PRESSURES appears on the display. This mode shows the tire pressure in pounds per square inch (psi) or kilopascals (kPa). Press the select button to scroll through the following information:

    • LF TIRE shows the tire pressure for the front driver's side tire.
    • RF TIRE shows the tire pressure for the front passenger's side tire.
    • LR TIRE shows the tire pressure for the rear driver's side tire.
    • RR TIRE shows the tire pressure for the rear passenger's side tire.
Timer: The DIC can be used as a timer. Press the select button while TIMER is displayed to start the timer. The display will show the amount of time that has passed since the timer was last reset, not including time the ignition is off. Time will continue to be counted as long as the ignition is on, even if another display is being shown on the DIC. The timer will record up to 99 hours, 59 minutes, and 59 seconds (99:59:59), after which the display will roll back to zero. To stop the counting of time, press the select button briefly while TIMER is displayed. To reset the timer to zero, press and hold the select button while TIMER is displayed.

Customization Button

(Customization): Press this button to access the VEHICLE SETTINGS menu and customize the settings to your vehicle. See DIC Vehicle Customization for more information.

Select Button

(Select): Press the select button to reset certain DIC functions, turn off or acknowledge messages on the DIC display, and set your customization settings. For example, this button will allow you to reset the trip odometers, turn off the FUEL LEVEL LOW message, and enables you to scroll through and select the language in which the DIC information will appear.