GM Service Manual Online
For 1990-2009 cars only

The Driver Information Center (DIC) has different modes which can be accessed by pressing the four DIC buttons located on the instrument panel, to the left of the steering wheel.

DIC Buttons (Base Level)


Object Number: 1357850  Size: A3

If your vehicle does not have a Head-Up Display (HUD), these are the buttons for the DIC.

(Information): Press the top or bottom of this button to scroll through the available vehicle information displays which include digital speed display, if your vehicle has this feature, fuel range, fuel economy, fuel used, average speed, timer, battery voltage, tire pressure, and engine oil life, if your vehicle has this feature. If you have an STS-V, the DIC also has additional vehicle information displays which include engine boost, engine oil temperature, oil pressure, and transmission fluid temperature. See "MPH (km)" later in this section for more information on the digital speed display.

(Trip Information): Press the top of this button to scroll through the odometer, trip odometer A and trip odometer B. Press and hold the bottom of this button to reset each trip odometer back to zero.

(Reset): Press this button to reset certain DIC features and to acknowledge DIC warning messages and clear them from the DIC display.

EM (English/Metric): Press this button to change the display from English to metric.

DIC Buttons (Uplevel)


Object Number: 1408959  Size: A3

If the vehicle has a HUD, these are the buttons for the DIC.

(Information): Press the top or bottom of this button to scroll through the available vehicle information displays which include digital speed display, if your vehicle has this feature, fuel range, fuel economy, fuel used, average speed, timer, battery voltage, tire pressure, engine oil life, if your vehicle has this feature, and display units. See "MPH (km)" later in this section for more information on the digital speed display.

(Head-Up Display): Press this button to change the position of the HUD on the windshield. Press the top part of the button to move the HUD image up. Press the bottom part of the button to move the HUD image down. To adjust the brightness of the HUD image, see Head-Up Display (HUD) . For information on adjusting the instrument panel brightness, see Instrument Panel Brightness .

(Reset): Press this button to reset certain DIC features and to acknowledge DIC warning messages and clear them from the DIC display.

(Trip Information): Press this button to scroll through the odometer, trip odometer A and trip odometer B. To reset each trip odometer, either press the reset button or press and hold the trip information button until the trip odometer displayed returns to zero.

Information Display Menu Items

The following display menu items can be displayed by pressing the information button.

MPH (km/h)

If the vehicle has this display, it shows the vehicle's speed digitally in either miles per hour (mph) or kilometers per hour (km/h).

MILES RANGE (km RANGE)

This display shows the approximate number of remaining miles (mi) or kilometers (km) you can drive without refilling the fuel tank. This estimate is based on the current driving conditions and will change if the driving conditions change. For example, if you are driving in traffic making frequent stops, the display may read one number, but if you enter the freeway, the number may change even though you still have the same amount of fuel in the fuel tank. This is because different driving conditions produce different fuel economies. Generally, freeway driving produces better fuel economy than city driving.

Once the range drops below about 40 miles (64 km) remaining, the display will show LOW RANGE.

If your vehicle is low on fuel, the Fuel Level Low message will be displayed. See "Fuel Level Low" under DIC Warnings and Messages for more information.

MPG AVG (L/100 km AVG)

This display 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 display was reset. To reset MPG AVG, press the reset button. The display will return to zero.

MPG INST (L/100 km INST)

This display shows the current fuel economy. This number reflects only the fuel economy that the vehicle has right now and will change frequently as driving conditions change. Unlike average fuel economy, this display cannot be reset.

GAL FUEL USED (L FUEL USED)

This display shows the number of gallons (gal) or liters (L) of fuel used since the last reset of this display. To reset GAL FUEL USED, press the reset button. The display will return to zero.

AVG MPH (AVG km/h)

This display 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 speeds recorded since the last reset of this display. To reset AVG MPH, press the reset button. The display will return to zero.

HUD Speed Advisor ON/OFF (On Vehicles with HUD)

If the vehicle has HUD, you can choose to have the Speed Limit/Speed Advisory display appear in the HUD. The DIC will toggle between ON and OFF. Press the reset button to make your selection. See Head-Up Display (HUD) for more information.

SPEED LIMIT: XXX MPH (SPEED LIMIT: XXX Km/h) or ADVISORY: XXX MPH (ADVISORY: XXX Km/h) (On Vehicles without HUD)

This display will show the speed limit or the advised speed as determined by the information on the map disc in the navigation system. If there is no map disc in the navigation system, this display will not be available.

The speed limit and speed advisory displays on the DIC and the HUD, if equipped, are for reference only. There may be segments of road where speed data has not been captured or times where incorrect speed data, or no speed data, will be displayed by the DIC and the HUD due to the navigation system not correctly matching the vehicle’s position to the actual road. Be aware of this and obey posted speed limits wherever you drive.

SPEED ALERT

This display will allow you to customize the speed alert warning. You can choose to have no warning display, or to have it display at the limit, at 5 mph (km/h) over the limit, or at 10 mph (km/h) over the limit. The DIC will toggle between OFF, AT LIMIT, +5 , +10 (MPH or Km/h). Press the reset button to make your selection.

TIMER OFF

This display can be used like a stopwatch. You can record the time it takes to travel from one point to another. To access the timer, press the information button until 00:00:00 TIMER OFF displays. To turn on the timer, press the reset button until TIMER ON displays. The timer will then start. To turn off the timer, press the reset button again until TIMER OFF displays. The timer will stop and display the end timing value. To reset the timer, press and hold the reset button after the timer has been stopped. The display will return to zero.

BATTERY VOLTS

This display shows the current battery voltage. If the voltage is in the normal range, the value will display. For example, the display may read 13.2 BATTERY VOLTS. If the voltage is low, the display will have LOW after it. If the voltage is high, the display will have HIGH after it. 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. See Charging System Light for more information.

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

Tire Pressure

This display shows the pressure for each tire in either pounds per square inch (psi) or kilopascals (kPa). If the tire pressure is normal, the value will display. If the tire pressure is low or high, LOW or HIGH will appear on the display with the value. See Inflation - Tire Pressure and DIC Warnings and Messages for more information. Press the information button to scroll through the following displays:

LF TIRE: This display shows the pressure in the driver side front tire.

RF TIRE: This display shows the pressure in the passenger side front tire.

LR TIRE: This display shows the pressure in the driver side rear tire.

RR TIRE: This display shows the pressure in the passenger side rear tire.

If the tire pressure display shows dashes instead of a value, there may be a problem with your vehicle. If this consistently occurs, see your dealer/retailer for service.

ENGINE OIL LIFE

If your vehicle has this display, it shows the estimated oil life remaining. If you see 99% ENGINE OIL LIFE on the display, that means that 99% of the current oil life remains.

When the oil life is depleted, the CHANGE ENGINE OIL SOON message will appear on the display. Change the oil as soon as possible. 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 and Engine Oil .

After an oil change, reset the ENGINE OIL LIFE display. To reset, see Engine Oil Life System . The display will show 100% ENGINE OIL LIFE after it has been reset. Also clear the CHANGE ENGINE OIL SOON message from the display.

ENGLISH DISPLAY UNITS (METRIC DISPLAY UNITS)

This display allows you to select between English and metric units of measurement if your vehicle has the uplevel DIC. Press the reset button to switch between English and metric units.

Blank Line

This display shows no information.

ENGINE BOOST (STS-V Only)

This display shows a graphic that indicates the amount of boost the engine is receiving in either pounds per square inch (psi) or kilopascals (kPa).

ENGINE OIL TEMPERATURE (STS-V Only)

This display shows the engine oil temperature in either degrees Fahrenheit (°F) or degrees Celsius (°C).

OIL PRESSURE (STS-V Only)

This display shows the oil pressure in either pounds per square inch (psi) or kilopascals (kPa).

TRANS (Transmission) FLUID TEMP (Temperature) (STS-V Only)

This display shows the transmission fluid temperature in either degrees Fahrenheit (°F) or degrees Celsius (°C).

Trip Information Display Menu Items

The following display menu items can be displayed by pressing the trip Information button.

Odometer

Press the trip information button until the odometer appears on the DIC display. The odometer shows the total distance the vehicle has been driven in either miles (mi) or kilometers (km).

Trip Odometer

Press the trip information button until trip odometer A or B appears on the DIC display. The trip odometer shows the current distance traveled since the last reset for each trip odometer in either miles (mi) or kilometers (km). Both odometers can be used at the same time.

For base level vehicles, each trip odometer can be reset to zero separately by pressing and holding the bottom of the trip information button while the desired trip odometer is displayed. For uplevel vehicles, reset each trip odometer by pressing the reset button or by pressing and holding the trip information button while the desired trip odometer is displayed.