GM Service Manual Online
For 1990-2009 cars only

When you turn the ignition on, the DIC will display your DRIVER NUMBER. You can have your dealer program your name to appear on this display line. See your dealer for more information.

The system will then perform a status check and display any messages if a problem is detected. If there are no problems detected, the display will return to the mode selected by that driver the last time the ignition was turned off.

If a problem is detected, a diagnostic message will appear in the display. The following pages will show the messages you may see on the DIC display.

The message center is continuously updated with the vehicle's performance status.


Object Number: 810560  Size: A2

The following buttons are on the DIC control panel which is located to the left of the steering column:

ODO/TRIP (Odometer/Trip): When this button is pressed, the display will show the total mileage, and Trip 1 or Trip 2 miles. Trip 1 and Trip 2 will display the miles traveled since the last reset. To reset the trip odometer, press the ODO/TRIP button until the preferred trip number (1 or 2) is shown in the DIC display, then press the RESET button. The trip odometer will now accumulate miles until the next reset.

FUEL INFO (Information): Press this button to display fuel information. Press the FUEL INFO button until the display shows FUEL ECONOMY AVERAGE. Average fuel economy is viewed as a long term approximation of your overall driving conditions. To learn the average fuel economy from a new starting point, press the RESET button while the average fuel economy is displayed in the DIC. Press the FUEL INFO button until the display shows FUEL ECONOMY INST. Instantaneous fuel economy varies with your driving conditions, such as acceleration, braking and the grade of the road being traveled. The RESET button does not function in this mode. Press the FUEL INFO button until the display shows FUEL RANGE. The fuel range will calculate the remaining distance you can drive without refueling. This calculation is based on the average fuel economy for the last 25 miles (40.25 km) driven, and the fuel remaining in the fuel tank. The RESET button does not function in this mode.

GAGE INFO (Information): Use this button to display oil pressure, oil life, coolant temperature, tire pressure and battery information. Press the GAGE INFO button until OIL PRESSURE appears in the display. If there are no problems detected with the oil pressure, the display will show OIL PRESSURE NORMAL. If a low oil pressure condition is detected, the display will show OIL PRESSURE LOW. If you see the OIL PRESSURE LOW message, your vehicle could be low on oil or the oil is not going through the engine properly. See your dealer for service. Press the GAGE INFO button until COOLANT TEMP appears in the display. If there are no problems detected with the temperature, COOLANT TEMP NORMAL will appear in the display. If the temperature is too high, COOLANT TEMP HOT will appear in the display. If you see the COOLANT TEMP HOT message, the engine is overheated. You should pull off the road, stop your vehicle and turn off your engine as soon as possible. This manual explains what to do. See Engine Overheating . Press the GAGE INFO button until the display shows BATTERY STATE. If the voltage is normal the display will show BATTERY STATE NORMAL. If the voltage drops below 10.5 volts, the display will show BATTERY STATE LOW. If the voltage is above 16.2 volts, the display will show BATTERY STATE HIGH. If the display shows the high or low message, you need to have your battery and charging system checked. Press the GAGE INFO button until OIL LIFE INDEX appears in the display. The OIL LIFE INDEX NORMAL display will show an estimate of the oil's remaining useful life. When the oil life index is less than 10 percent, the display will show OIL LIFE INDEX CHANGE OIL. When you have the oil changed according to the maintenance schedule (see Part A: Scheduled Maintenance Services ), you will have to reset the oil life monitor. To reset the Oil Life System, see Engine Oil . Press the GAGE INFO button until TIRE PRESSURE appears in the display. TIRE PRESSURE NORMAL is displayed when the check tire pressure system believes your vehicle's tire pressures are normal. If a potential tire pressure problem is detected, the display will show CHECK TIRE PRESSURE. If you see the CHECK TIRE PRESSURE message, you should stop as soon as you can and check all your tires for damage. If a tire is flat, see If a Tire Goes Flat . Also check the tire pressure in all four tires as soon as you can. See Inflation - Tire Pressure and Check Tire Pressure System . There are times when you will have to reset (calibrate) the Check Tire Pressure System. See Check Tire Pressure System .

RESET: This button, used along with other buttons, will reset system functions.

ENG/MET (English/Metric): Use this button to change the display between English and metric units.

DIC messages can be displayed in one of three languages: English, French or Spanish. The language of the display is set by pressing both the FUEL INFO and RESET buttons for five seconds. As the buttons are held, each language will be displayed for three seconds. Release the FUEL INFO and RESET buttons when the desired language is displayed. All DIC messages will now be in the selected language. Language selection can also be done through the DIC Personal Choice Programming. See "Language Selection" later in this section.