GM Service Manual Online
For 1990-2009 cars only

DIC Switches

DSPL MODE

The DSPL MODE button is used in order to change the instrument cluster display. The IPC display has 3 different states.

    • IPC gauges
    • IPC gauges and digital speed display
    • Digital speed display

ENG/MET

The ENG/MET button is used in order to change the instrument cluster and DIC displays between English and metric units.

INFO (Up and Down)

The INFO button consists of 2 switches:

    • INFO Up -- The top of the INFO button is used in order to scroll up to the next DIC display parameter.
    • INFO Down -- The bottom of the INFO button is used in order to scroll down to the next DIC display parameter.

INFO RESET

The INFO RESET button is used in order to acknowledge the currently displayed DIC message or reset the currently displayed DIC parameter.

ON/OFF

The ON/OFF button is used for the following functions:

    • Feature Programming -- Turn the currently displayed parameter on and off.
    • Timer -- Start and stop the timer.

TRIP (RESET and A/B)

The TRIP button consists of 2 switches:

    • TRIP RESET -- The top of the TRIP button is used in order to reset the displayed trip odometer to zero.
    • TRIP A/B -- The bottom of the TRIP button is used in order to change the trip odometer between trip A and trip B.

Indicators and Warning Messages

Refer to Indicator/Warning Message Description and Operation .

Vehicle Information Display

The vehicle information display parameters are available to the driver during the RUN power mode. The driver navigates through the various parameters displayed on the driver information center (DIC) using the INFO Up and INFO Down DIC buttons. Some parameters can be reset using the INFO RESET button.

Some parameters require information from other modules via class 2 serial data messages. If the instrument cluster (IPC) has not received data for a parameter when the time has come to display the parameter, the IPC will blank the data on the DIC. If the IPC has determined that a class 2 communication failure with one of the modules exists when the time has come to display the parameter, the IPC will display dashes on the DIC.

The vehicle information display parameters are displayed in the following order:

  1. Outside air temperature
  2. Fuel range
  3. Average fuel economy
  4. Instantaneous fuel economy
  5. Fuel used
  6. Average vehicle speed
  7. Timer
  8. Battery Voltage
  9. Tire Pressure Monitor (w/UJ6)
  10. Engine oil life
  11. Transmission fluid life
  12. Cellular Telephone (w/UV8)
  13. Feature Programming
  14. Blank display

When the INFO Up button is pressed, the DIC will display the next parameter on the list. When the INFO Down button is pressed, the DIC will display the previous parameter on the list.

Outside Air Temperature

The outside air temperature parameter is supplied by the instrument panel integration module (IPM) to the IPC via class 2 serial data messages. The outside air temperature parameter cannot be reset by the driver. The outside air temperature parameter is displayed on the DIC in one of the following formats:

    • XXX °F OUTSIDE TEMP
    • XXX °C OUTSIDE TEMP

The XXX represents the supplied temperature value. The units of the display will correspond to the current instrument cluster setting.

Fuel Range

The fuel range is the estimated distance that the vehicle can travel under the current fuel economy and fuel level conditions. The fuel range parameter cannot be reset by the driver. The fuel range parameter is displayed on the DIC in one of the following formats:

    • XXX MILES RANGE
    • XXX km RANGE
    • LOW RANGE

The XXX represents the calculated range value. The units of the display will correspond to the current instrument cluster setting. The LOW RANGE message is displayed when the range is calculated to be less than 64 km (40 miles).

Average Fuel Economy

The average fuel economy is a function of distance divided by fuel used since the parameter was last reset. When the average fuel economy is displayed on the DIC, pressing the INFO RESET button on the DIC will reset the average fuel economy parameter. The average fuel economy parameter is displayed on the DIC in one of the following formats:

    • XX.X MPG AVG
    • XX.X L/100km AVG
    • XX.X km/L AVG (Japan metric)

The XX.X represents the calculated average fuel economy value. The units of the display will correspond to the current instrument cluster setting. The DIC will display 0.0 for the English and Japan metric modes and 99.9 for the normal metric mode when the parameter is reset.

Instantaneous Fuel Economy

The instantaneous fuel economy is a function of distance divided by fuel used over a short period of time. The instantaneous fuel economy cannot be reset by the driver. The instantaneous fuel economy parameter is displayed on the DIC in one of the following formats:

    • XX MPG INST
    • XX L/100km INST
    • XX km/L INST (Japan metric)

The XX represents the calculated instantaneous fuel economy value. The units of the display will correspond to the current instrument cluster setting. The DIC will display 0 for the English and Japan metric modes and 99 for the normal metric mode after the battery has been disconnected and then reconnected.

Fuel Used

The fuel used parameter is the amount of fuel that has been used since the last parameter reset. When the fuel used is displayed on the DIC, pressing the INFO RESET button on the DIC will reset the fuel used parameter. The fuel used parameter is displayed on the DIC in one of the following formats:

    • XX.X GAL FUEL USED
    • XXX.X L FUEL USED

The XXX.X represents the calculated fuel used value. The units of the display will correspond to the current instrument cluster setting. The DIC will display a range from 0.0 to 99.9 GAL in the English mode and from 0.0 to 999.9 L for the metric mode.

Average Vehicle Speed

The average vehicle speed is a function of the vehicle speed over the time since the parameter was last reset. When the average vehicle speed is displayed on the DIC, pressing the INFO RESET button on the DIC will reset the average vehicle speed parameter. The average vehicle speed parameter is displayed on the DIC in one of the following formats:

    • XXX.X AVG MPH
    • XX.X AVG km/h

The XXX.X represents the calculated average vehicle speed value. The units of the display will correspond to the current instrument cluster setting.

Timer

The timer is used to record elapsed time. When the timer is displayed on the DIC, pressing the INFO RESET button on the DIC will reset the timer. The timer is started and stopped by pressing the ON/OFF button on the DIC. The timer is displayed on the DIC in one of the following formats:

    • XX:XX:XX TIMER (ON)
    • XX:XX:XX TIMER (OFF)

The first XX represents hours elapsed, the second XX represents minutes elapsed, and the third XX presents seconds elapsed. The ON or OFF is a fixed display on the DIC and indicated whether the timer is currently running. The maximum range of the timer is 99 hours, 59 minutes, and 59 seconds. After the maximum range is reached, timer will roll-over and display all zeros (00:00:00).

Battery Voltage

The battery voltage parameter is supplied by the dash integration module (DIM) to the IPC via class 2 serial data messages. The battery voltage parameter cannot be reset by the driver. The voltage is displayed on the DIC in one of the following formats:

    • XX.X BATTERY VOLTS OK
    • XX.X BATTERY VOLTS LOW
    • XX.X BATTERY VOLTS HIGH

The XX.X represents the supplied battery voltage value. The battery voltage value will range between 0.0 and 17.0 volts.

Tire Pressure Monitor (w/UJ6)

The tire pressure parameter is supplied by the remote keyless entry (RKE) module to the IPC via class 2 serial data messages. The tire pressure parameter cannot be reset by the driver. The tire pressure is displayed on the DIC in one of the following formats:

    • XX PSI LF TIRE OK
    • XX kPa LF TIRE OK
    • XX PSI LF TIRE LOW
    • XX kPa LF TIRE LOW
    • XX PSI LF TIRE HIGH
    • XX kPa LF TIRE HIGH
    • XX PSI LR TIRE OK
    • XX kPa LR TIRE OK
    • XX PSI LR TIRE LOW
    • XX kPa LR TIRE LOW
    • XX PSI LR TIRE HIGH
    • XX kPa LR TIRE HIGH
    • XX PSI RF TIRE OK
    • XX kPa RF TIRE OK
    • XX PSI RF TIRE LOW
    • XX kPa RF TIRE LOW
    • XX PSI RF TIRE HIGH
    • XX kPa RF TIRE HIGH
    • XX PSI RR TIRE OK
    • XX kPa RR TIRE OK
    • XX PSI RR TIRE LOW
    • XX kPa RR TIRE LOW
    • XX PSI RR TIRE HIGH
    • XX kPa RR TIRE HIGH

The XX represents the supplied tire pressure value. The units of the display will correspond to the current instrument cluster setting.

Engine Oil Life

The engine oil life parameter is calculated by the powertrain control module (PCM) and the information is provide to the IPC via class 2 serial data messages. When the engine oil life is displayed on the DIC, pressing the INFO RESET button on the DIC for 5 seconds will reset the engine oil life parameter. The engine oil life is displayed as XXX% ENGINE OIL LIFE. The XXX represents the calculated engine oil life value. The value will range between 100% and 0%.

Transmission Fluid Life

The transmission fluid life parameter is calculated by the powertrain control module (PCM) and the information is provide to the IPC via class 2 serial data messages. When the transmission fluid life is displayed on the DIC, pressing the INFO RESET button on the DIC for 5 seconds will reset the transmission fluid life parameter. The transmission fluid life is displayed as XXX% TRANS FLUID LIFE. The XXX represents the calculated transmission fluid life value. The value will range between 100% and 0%.

Cellular Telephone (w/UV8)

Refer to Indicator/Warning Message Description and Operation .

Personalization

Personalization features may be set for the vehicle or the driver. Vehicle features do not change with each driver. Specific drivers are recognized by the vehicle through the keyless entry transmitters, the memory buttons, or the driver information center (DIC).

For more information on personalization features for this vehicle, refer to Personalization Description and Operation in Personalization.