GM Service Manual Online
For 1990-2009 cars only

The driver information center (DIC) displays the DIC WOW for 5 seconds when it first powers up. If enabled through Personalization, the DIC returns to the last display status before no power condition.

There are 7 switch functions for the DIC.

    • Trip/Fuel Information Switch
    • Vehicle Information Switch
    • Personalization Switch
    • Set/Reset
    • INFO UP
    • INFO DOWN

Trip/Fuel Information Switch

The trip/fuel information button is used to navigate between vehicle fuel information and trip options. Cycle through the following vehicle trip/fuel information by successive pressing of the trip/fuel information button or use the Info Up/Info Down button to scroll through the DIC trip/fuel information.

    • Average Fuel Economy (AFE)
    • Average Vehicle Speed (AVE)
    • Battery Voltage
    • English/Metric
    • Fuel Range
    • Fuel Used
    • Instantaneous Fuel Economy (IFE)
    • Trip Timer
    • Trip A
    • Trip B
    • Blank

Vehicle Information Switch

The driver information center (DIC) vehicle information switch is used to navigate between vehicle information options. Cycle through the following vehicle information by successive pressing of the vehicle information button or use the Info Up/Info Down button to scroll through the vehicle information switch.

    • Engine Oil Life Remaining
    • Units
    • Park Assist Menu
    • Front Tire Pressures
       - Tire Pressure LF
       - Tire Pressure RF
    • Rear Tire Pressures
       - Tire Pressure LR
       - Tire Pressure RR
    • Tire Programming Menu
    • Tire Inflation Monitoring System (TIMS) Reset
    • Key Fob Programming Menu
    • Speed Limit (Speed Alert)
    • Advisory (Speed Advisory)
    • Blank Display

Personalization Switch

The personalization switch is used to navigate between vehicle personalization options. Cycle through the following vehicle personalization options by successive pressing of the personalization button or use the Info Up/Info Down button to scroll through the personalization information.

    • Display Language
    • Auto Door Lock
    • Auto Door Unlock
    • Remote Door Lock
    • Remote Door Unlock
    • Delay Door Lock
    • Exit Lighting
    • Approach Lighting
    • Chime Volume
    • Park Tilt Mirrors
    • Easy Exit Seat
    • Memory Seat Recall
    • Remote Start
    • Factory Settings
    • Feature Settings

For more information on vehicle personalization features, refer to the Owner's Manual.

Set/Reset Switch

Press the set/reset button in order to set or acknowledge any switch menu options.

Info Up/Info Down Switch

Scroll through any selected driver information center (DIC) switch function by pressing Info Up/Info Down.

Average Fuel Economy

Average fuel economy is calculated using the equation: AFE = Distance/Fuel

    • Distance = The accumulated distance travelled since the last reset of this value
    • Fuel = The accumulated fuel consumption since the last reset of this value

The engine control module (ECM) sends the average fuel economy serial data message to the instrument panel cluster (IPC). The value of this mode is retained during ignition OFF and can be changed between English units and metric units by selecting from the DIC trip/fuel information switch.

Average Vehicle Speed

Average vehicle speed is calculated using the equation: Average Speed = AVS Distance/AVS Time

    • Distance = The accumulated distance travelled since the last reset of this value
    • Time = The accumulated time since the last reset of this value

Fuel Range

This message indicates the estimated distance that the vehicle can travel under the current fuel economy and fuel level conditions since the last battery connection to the IPC. Fuel Range is calculated using the equation: Fuel Range = Range Distance/Range Fuel Used.

    • Range Distance = The accumulated distance travelled since the last reset of this value.
    • Range Fuel Used = The accumulated fuel delivered since the last reset of this value

The ECM sends the fuel range value to the IPC. IPC receives a serial data message with fuel information. The fuel range value is retained during ignition OFF and can be changed between English and Metric units by accessing the DIC trip/fuel information switch. The Fuel Range display cannot be reset. LOW is displayed when fuel range is below a predetermined value.

Fuel Used

This message indicates the amount of fuel used since last reset. Fuel Used is calculated using the equation: Fuel Used = Fuel Sum.

    • Fuel Used = The accumulated fuel used since the last reset of this value.
    • Fuel Sum = The accumulated fuel sum since the last reset of this value

The ECM sends the fuel used value to the IPC. The IPC receives a serial data message with the fuel information. The fuel used value is retained as long as battery power is available to the DIC. The fuel used value can be changed between English and Metric units by accessing the DIC trip/fuel information switch.

Instantaneous Fuel Economy (IFE)

IFE is calculated using the equation: IFE = Distance/Fuel Used.

    • Distance = The accumulated distance travelled for the last 2 seconds
    • Fuel = The accumulated fuel delivered for the last 2 seconds

The IPC receives a serial data message from the ECM. The distance information is calculated by the IPC using the vehicle speed information from the ECM. These values are retained during ignition OFF and can be changed between English and Metric units by accessing the DIC trip/fuel information switch. The IFE display cannot be reset.

Trip Timer

The timer records elapsed time starting from activation. When the DIC displays the timer, pressing the SET/RESET switch for 1 second on the DIC resets the timer. Pressing the SET/RESET button on the DIC switch for approximately 1 second starts and stops the timer. The DIC displays the timer in one of the following formats:

The DIC displays the timer in the following format: XX: XX:XX:

The first XX represents hours elapsed, the second XX represents minutes elapsed, and the third XX represents seconds elapsed. The maximum range of the timer is 99 hours, 59 minutes, and 59 seconds. After the maximum range is reached, the timer displays all zeros (00:00:00).

Battery Voltage

Battery voltage data is not determined by the DIC and is not a resettable parameter. The DIC displays (- - -) when an invalid battery data is received or when the IPC experiences a loss of serial data communications.

Engine Oil Life Remaining

The Engine Oil Life Remaining displays the estimated percentage of oil life remaining. The engine control module (ECM) sends the oil life remaining percentage to the instrument panel cluster (IPC) via a serial data message. The driver information center (DIC) displays the current percentage of the GM Oil Life System as determined by the ECM. When the engine oil life remaining percentage drops below 5 percent, the DIC displays CHANGE ENGINE OIL SOON message. When the engine oil is changed, reset the GM Oil Life System. Refer to GM Oil Life System Resetting.

Tire Pressure Monitor

The instrument panel cluster (IPC) receives a serial data message from the tire pressure monitoring (TPM) system for front and rear tire pressure data. The driver information center (DIC) will display the pressure for each of the front and rear tires. Tire pressure values are not resettable through the DIC.

Park Assist Menu

The park assist menu is displayed in the driver information center (DIC) to indicate the ON/OFF status. The DIC displays the current state of the park assist until the instrument panel cluster (IPC) receives a message indicating a status change. The DIC displays (-- -- --) when communication with park assist is lost.

Key FOB Programming Menu

The key fob programming menu is used to initiate programming of the key fobs. The key fob programming menu can only be achieved with the vehicle transmission in PARK.

English/Metric Button

The English/Metric button is used to toggle between English and Metric unit systems and can be accessed through the DIC trip/fuel information switch.

Trip A/B

The trip odometer A or B can be accessed through the DIC trip/fuel information switch.

Trip Display

DIC Trip Display

Range

Metric

English

TRIP A

####.#km

####.#MI

TRIP B

####.#km

####.#MI

Language

The driver information center (DIC) is capable of displaying in the languages listed below. However, the DIC is capable of storing at least 3 different languages at any one time.

    • English
    • French
    • Spanish
    • Japanese
    • German

A simultaneous press of the DIC Vehicle Information and Personalization Switches for about 1 second provides a shortcut to change the language without understanding the currently displayed language. The Language settings may also be assessed through the DIC personalization switch.

Speed Alert

The Speed Alert feature notifies the driver what the legal speed limit is for the road the vehicle is currently travelling on. This feature also alerts the driver when the speed limit has been exceeded. Scroll through the DIC vehicle information menu to display 'Speed Limit: XXX MPH (Km/h). The displayed speed is the legal speed limit for the road. When the vehicle speed exceeds the legal speed limit, the warning 'Speed Limit: XXX MPH (Km/h) appears on the DIC.

The speed alert feature offers 4 selectable options:

  1. Speed Alert: OFF
  2. Speed Alert: At Limit (no offset)
  3. Speed Alert: +5 MPH (Km/h)
  4. Speed Alert: +10 MPH (Km/h)

Options 3 and 4 are offsets for the warning message. This means the warning message does not display until the vehicle speed exceeds the legal speed limit by 5 or 10 MPH (Km/h). When option 1 is selected (Speed Alert: OFF) no DIC warning message is displayed. However, the speed limit will still be displayed by scrolling through the DIC menus.

The IPC receives Speed Alert information as serial data messages from the radio/navigation system and does not have any control over the data being displayed. If the radio/navigation system does not send the speed alert message, the IPC displays "--" "--" (dashes). This could be because there are no speed data for the road the vehicle is travelling on, a malfunction in the radio/navigation system or a GPS malfunction.

Speed Advisory

The Speed Advisory feature is similar to Speed Alert but only notifies the driver of what the 'advised' speed is. This would apply to roads such as highway exit ramps where there are recommended speed for the ramp. Scroll through the DIC vehicle information menu to display 'Advisory: XXX MPH (Km/h). The notification to the driver is based on the offset for the Speed Alert listed above. Speed Advisory messages have a higher priority than Speed Alert messages. Speed Advisory notification can be turned off through the DIC.

The IPC receives Speed Advisory information as serial data messages from the radio/navigation system and does not have any control over the data being displayed. If the radio/navigation system does not send the Speed Advisory message, the IPC displays "--" "--" (dashes). This could be because there are no speed data for the road the vehicle is travelling on, a malfunction in the radio/navigation system or a GPS malfunction.