GM Service Manual Online
For 1990-2009 cars only
Table 1: Trip Display
Table 2: Compass Display

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

There are 4 switch functions for the DIC. The following switch names should be used throughout the manual to keep consistency with the owner's manual.

    • Trip/Fuel
    • Vehicle Information
    • Customization
    • Set/Reset

Trip/Fuel

The Trip/Fuel switch is used to navigate between vehicle fuel information parameters. Cycle through the following vehicle parameters by successive pressing of the Trip/Fuel Info switch.

    • Blank Display
    • Average Fuel Economy (AFE)
    • Average Vehicle Speed (AVE)
    • Inatantaneous Fuel Economy (IFE)
    • Fuel Range
    • Odometer
    • Trip A
    • Trip B

Vehicle Information Switch

The Vehicle Information switch is used to navigate between vehicle information parameters. Cycle through the following vehicle parameters by successive pressing of the Vehicle Information switch.

    • Blank Display
    • English/Metric Units
    • Compass Zone Setting (if equipped)
    • Compass Recalibration (if equipped)
    • Key Fob Programming Menu (only available in park)
    • Oil Life Index (OLI)
    • Park Assist On/Off
    • Tire Inflation Monitoring System (TIMS) Reset (only available in park)

Customization Switch

The customization switch is used to set personalization features for the vehicle. Many of the parameters in the trip/fuel menu and the vehicle info menu can be programmed through the customization switch. In addition to the parameters in the trip/fuel and vehicle information menus, the following features can also be programmed. Refer to the vehicle owner's manual for more customization information.

    • Approach Lighting
    • Automatic Door Lock
    • Automatic Door Unlock
    • Chime Volume
    • Delayed Door Lock
    • Display Language
    • Easy Exit Seat
    • Exit Lighting
    • Factory Setting
    • Language
    • Memory Seat Recall
    • Park Tilt Mirrors
    • Remote Door Lock
    • Remote Door Unlock
    • Remote Start

Set/Reset Switch

Press the Set/Reset button on order to set or acknowledge any of the switch menu options.

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 ECM sends the average fuel economy serial data message to the IPC for accumulation. 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 vehicle information menu.

Average Speed

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

    • Distance = The accumulated distance travelled since the last reset of this value
    • Ignition On = The accumulated ignition on 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.
    • Fuel Used = The accumulated fuel delivered since the last reset of this value

The ECM sends the fuel range value to the instrument panel cluster (IPC). The fuel range value is retained during ignition OFF and can be changed between English and Metric units by accessing the English/Metric menu. The Fuel Range display cannot be reset. LOW is displayed when fuel range is below a predetermined value.

Engine Oil Life Index

The engine control module (ECM) sends the engine oil life remaining information via serial data circuit to the IPC for display. When the ECM detects that the oil life remaining percentage has dropped below 5 percent, it sends the IPC a serial data message to display CHANGE ENGINE OIL SOON. 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 the front and rear tire pressure. The driver information center (DIC) will display the pressure for each of the front and rear tires. When a tire with low air pressure is present, the DIC displays XX TIRE PRESSURE LOW.

Reset Tire Pressure System

Press the vehicle information button until PRESS TO RESET TIRE SYSTEM displays. This display allows you to reset the tire pressure system. Once in this display, press the set/reset button to reset the system. The message TIRE PRESSURE SYSTEM RESET will display after the system has been reset.

Park Assist Menu

The park assist menu is displayed in the DIC. The DIC displays the current state of the park assist - ON/OFF. The IPC receives a serial data message indicating the state of the park assist system. The DIC displays (-- -- --) when communication with the park assist system is lost.

English/Metric Button

The English/Metric button is used to toggle between English and Metric unit system and can be accessed through the vehicle information switch.

Trip A/B

The trip odometer A or B can be accessed through the Trip/Fuel switch.

Trip Display

DIC Trip Display

Range

Metric

English

ODOMETER

######km

######MI

TRIP A

####.#km

####.#MI

TRIP B

####.#km

####.#MI

Language

The DIC is capable of displaying in 3 languages:

    • English
    • French
    • Spanish

A simultaneous press of the Vehicle Information and Customization 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 Customization switch.

Compass

The compass uses two magnetic field sensors for compass direction. One sensor is for the north and south, the other for the east and west. For the compass variance and calibration information refer to Compass Calibration and Magnetic Variance. The DIC displays the compass information on the right most 2 characters of the first DIC line when the compass is an option on the vehicle. When corresponding to the true north radial degrees, the compass displays the following directions.

Compass Display

Radial Degree (True North)

Compass Direction

337.5 to 22.5

N

22.5 to 67.5

NE

67.5 to 112.5

E

112.5 to 157.5

SE

157.5 to 202.5

S

247.5 to 292.5

W

Your compass may be located in the inside rear view mirror. The inside rear view mirror (ISRVM) uses two magnetic field sensors for compass direction. One sensor is for the north and south, the other is for the east and west. The ISRVM provides power and a low reference to each sensor. As the vehicle travels with or against the earths magnetic pull, there is a change in voltage on both sensors. As a result of the change in voltage, the mirror changes the heading on the compass display. For compass variance and calibration information, refer to Compass Calibration and Magnetic Variance.

Outside Air Temperature

The DIC displays the ambient air temperature based on serial data message from the HVAC control module. The ambient air temperature can be displayed in English or Metric systems from the vehicle information menu. The DIC displays (-- -- --) when an invalid ambient air temperature is received or communication is lost with the HVAC control module.