GM Service Manual Online
For 1990-2009 cars only

The DIC has different modes which can be accessed by pressing the DIC buttons located on the center of the instrument panel. Depending on whether your vehicle has the base level or uplevel DIC, the buttons and modes available will differ.

The buttons on the base level vehicle are the trip/odometer and English/Metric buttons.

The buttons on the uplevel vehicle are the trip/odometer, fuel, gages, set/reset, and option buttons.

The button functions are detailed in the following pages.

DIC Buttons

Uplevel shown


Object Number: 1380180  Size: B1

TRIP/ODO (Trip/Odometer): Press this button on the base level vehicle to display the odometer and trip distance. Press this button on the uplevel vehicle to display the odometer, trip distance, time elapsed, and average speed.

E/M (English/Metric)**: Press this button on the base level vehicle to select between English or Metric units. To select between English or Metric units on the uplevel vehicle, see "Units" later in this section.

(Fuel)*: Press this button to display the fuel range, average fuel economy, and instantaneous fuel economy.

(Gages)*: Press this button to display the battery voltage and oil life.

(Set/Reset)*: Press this button to set or reset certain functions and to turn off or acknowledge messages on the DIC.

(Option)*: Press this button to display the units, language, personalization, compass zone, and compass calibration. See DIC Vehicle Personalization for more information.

(Traction Control)*: If your vehicle has the traction control system, press this button to turn traction control on or off. See Traction Control System (TCS) for more information.

(Hazard): Press this button to turn the hazard warning flashers on and off. See Hazard Warning Flashers for more information.

*These buttons are available on uplevel vehicles only.

**This button is available on base level vehicles only.

Trip/Odometer Menu Items

TRIP/ODO (Trip Odometer): Press this button to scroll through the following menu items:

Odometer

Press the trip/odometer button until the odometer displays. This mode shows the distance the vehicle has been driven in either miles or kilometers.

Trip A and Trip B

Press the trip/odometer button until A or B displays. This mode shows the current distance traveled in either miles or kilometers since the last reset for each trip odometer. Both trip odometers can be used at the same time.

The display will show the odometer on the top line and the trip odometer information, either A or B, on the bottom line.

Each trip odometer can be reset to zero separately by briefly pressing the set/reset button on the uplevel vehicle or by briefly pressing and holding the trip odometer button on the base level vehicle while the desired trip odometer is displayed.

There is also a retroactive trip odometer function that performs the following for each trip odometer:

    • If the vehicle's speed has exceeded 3 mph (5 km/h) during the current ignition cycle, this function will set the trip odometer to the distance driven during the current ignition cycle.
    • If the vehicle's speed has not exceeded 3 mph (5 km/h), this function will set the trip odometer to the distance driven during the previous ignition cycle plus the distance driven during the current ignition cycle.

Press and hold the set/reset button on the uplevel vehicle or the trip/odometer button on the base level vehicle for three seconds, then release the button. The retroactive trip odometer value will be set into the currently displayed trip odometer.

Time Elapsed (Uplevel Only)

Press the trip/odometer button until TIME ELAPSED :00 displays. This mode is like a stopwatch, in that you can clock the time it takes to get from one point to another. Each of the fields for the hours, minutes, and seconds are two numeric digits.

Once TIME ELAPSED :00 is displayed, press the set/reset button on the uplevel vehicle to start the timing feature. Press the set/reset button again to stop it. If you will be starting and stopping your vehicle, during a trip for instance, the TIME ELAPSED feature will automatically start timing where it left off when you last stopped. To reset it, press and hold the set/reset button for approximately 1.5 seconds. The display will return to zero. Press the trip/odometer button to exit from the TIME ELAPSED display.

Average Speed (Uplevel Only)

Press the trip/odometer button until AVERAGE SPEED displays. This mode shows the average speed of the vehicle in miles per hour (mph) or kilometers per hour (km/h). This average is calculated based on the various vehicle speed recorded since the last reset of this value. To reset the value, press the trip/odometer button to display AVERAGE SPEED, then press and hold the set/reset button on the uplevel vehicle. The display will return to zero.

Fuel Menu Items (Uplevel Only)

(Fuel): Press this button to scroll through the following menu items:

Fuel Range

Press the fuel button until FUEL RANGE displays. This mode shows the approximate number of remaining miles or kilometers the vehicle can be driven without refueling.

Fuel range is based on several factors, including distance traveled, fuel used, fuel capacity, etc. This estimate will change if driving conditions change. For example, if driving in traffic and making frequent stops, this mode may read one number, but if the vehicle is driven on a freeway, the number may change even though the same amount of fuel is in the fuel tank. This is because different driving conditions produce different fuel economies. Generally, freeway driving produces better fuel economy than city driving. Fuel range cannot be reset.

If your vehicle is low on fuel, FUEL RANGE LOW will display followed by the LOW FUEL message. See "LOW FUEL" under DIC Warnings and Messages for more information.

Average Fuel Economy

Press the fuel button until AVG ECONOMY displays. This mode shows the approximate average miles per gallon (mpg) or liters per 100 kilometers (L/100 km). This number is calculated based on the number of mpg (L/100 km) recorded since the last time this menu item was reset. To reset AVG ECONOMY, press and hold the set/reset button. The display will return to zero.

Instantaneous Fuel Economy

Press the fuel button until INST ECONOMY displays. This mode shows the current fuel economy at a particular moment and will change frequently as driving conditions change. This mode shows the instantaneous fuel economy in miles per gallon (mpg) or liters per 100 kilometers (L/100 km). Unlike average fuel economy, this screen cannot be reset.

Gages Menu Items (Uplevel Only)

(Gages): Press this button to scroll through the following menu items:

Battery

Press the gages button until BATTERY displays. This mode shows the current battery voltage.

If there is a problem with the battery charging system, a DIC message will display. See DIC Warnings and Messages for more information.

Your vehicle's charging system regulates voltage based on the state of the battery. The battery voltage may fluctuate when viewing this information on the DIC. This is normal.

Oil Life

Press the gages button until OIL LIFE displays. This mode shows an estimate of the oil's remaining useful life. If you see OIL LIFE 99% on the display, that means 99% of the current oil life remains. The engine oil life system will alert you to change your oil on a schedule consistent with your driving conditions.

When the remaining oil life is low, the CHANGE OIL SOON message will appear on the display. You should change your oil as soon as possible. See Engine Oil . In addition to the engine oil life system monitoring the oil life, additional maintenance is recommended in the Maintenance Schedule in this manual. See Scheduled Maintenance for more information.

Remember, you must reset the OIL LIFE yourself after each oil change. It will not reset itself. Also, be careful not to reset the OIL LIFE accidentally at any time other than when the oil has just been changed. It cannot be reset accurately until the next oil change. To reset the engine oil life system, see Engine Oil Life System . The display will show 100% when the system is reset.

Option Menu Items (Uplevel Only)

(Option): Press this button to scroll through the following menu items:

Units

Press the option button until UNITS displays. This mode allows you to select between English or Metric units of measurement. Once in this mode, press the set/reset button to select between ENGLISH or METRIC units.

Language

Press the option button until the language screen displays. This mode allows you to select the language in which the DIC messages will appear. Once in this mode, press the set/reset button to select among the following choices:

    • English
    • Francais (French)
    • Espanol (Spanish)

Personalization

Press the option button until PERSONAL PROGRAM displays. Your vehicle may have personalization capabilities that allow you to program certain features to a preferred setting for up to two drivers.

Your vehicle may also have customization capabilities that allow you to program certain features to one preferred setting. Customization features can only be programmed to one setting on the vehicle and cannot be programmed to a preferred setting for up to two drivers. See DIC Vehicle Personalization for additional information on personal programming.

Compass Zone

Under certain circumstances, such as during a long distance cross-country trip, it will be necessary to compensate for compass variance and reset the zone through the DIC.

Compass variance is the difference between the earth's magnetic north and true geographic north. If not adjusted to account for compass variance, the compass in the vehicle could give false readings.

In order to do this, the compass must be set or calibrated to the variance zone in which the vehicle is travelling.

To adjust for compass variance, use the following procedure:

Compass Variance Procedure

  1. Press the option button until COMPASS ZONE displays.

  2. Object Number: 808475  Size: B4
  3. Find the vehicle's current location and variance zone number on the map.
  4. Zones 1 through 15 are available.

  5. Press the set/reset button to scroll through and select the appropriate variance zone.
  6. Navigate to one of the trip/fuel menu screens to view the direction the vehicle is moving. This will be shown in the top right corner of the DIC display.

  7. If you need to calibrate the compass, use the compass calibration procedure. See "Compass Calibration Procedure" following.

Compass Calibration

The compass is manually calibrated. Only calibrate the compass in a safe location where driving the vehicle in circles is not a problem.

To calibrate the compass, use the following procedure:

Compass Calibration Procedure

  1. Press the option button until the COMPASS CALIBRATION screen is displayed.
  2. Press the set/reset button to start the compass calibration.
  3. The DIC will display CALIBRATION BEGUN DRIVE IN CIRCLES. Drive the vehicle in a circle until the DIC displays CALIBRATION FINISHED. The DIC will display CALIBRATION FINISHED for several seconds and then will display the COMPASS CALIBRATION screen.