Driver Information Center (DIC) Description and Operation CTS and CTS-V

The radio displays the current driver ID when it first powers up. The radio then returns to the last display status before no power condition.

There are 4 buttons on the radio:

The ENG/MET button is used in order to change the instrument panel cluster (IPC) displays between English and metric units. The km/h indicator or the MPH indicator illuminate in the IPC accordingly.

The DIC INFO button is used in order to navigate through the following driver information center (DIC) modes:

Average Fuel Economy (AFE)

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

The instrument panel cluster (IPC) receives a class 2 message from the engine control module (ECM) regarding fuel usage information. The value of this mode is retained during ignition OFF and can be changed between English units and metric units by pressing the ENG/MET button on the DIC switch. Press and hold the Reset button on the radio switch for one second in order to reset the AFE display.

Average Vehicle Speed

Average speed is calculated using the equation: Average Speed = Distance/Ignition On

Ignition on time is measured from the time that the ignition is turned ON to the time when the ignition is turned OFF. The value of this mode is retained during ignition OFF. Press and hold the Reset button on the radio switch for one second in order to reset the average speed display.

Battery Voltage

The IPC receives a class 2 message from the ECM for battery voltage data. When the battery voltage is below the normal operating range, the DIC displays BATTERY VOLTAGE LOW and the actual battery voltage. When the battery voltage is greater than the normal operating range, the DIC displays BATTERY VOLTAGE HIGH and the actual battery voltage. The charging system indicator also illuminates when the battery voltage is outside the normal operating range.

Engine Oil Life

The ECM sends the oil life remaining percentage to the radio via class 2 serial data messages. The radio displays the current percentage of the GM Oil Life System as determined by the ECM. When the oil life remaining percentage drops below 10 percent, the radio displays CHANGE ENGINE OIL. When the engine oil is changed, reset the engine oil life in order to clear the oil life remaining percentage display. Press and hold the Reset button on the DIC switch for 5 seconds until the radio displays NORMAL 100 percent.

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 reset of the value. Fuel range is calculated using the equation: Fuel Range = Distance Sum/Fuel Sum.

The radio receives a class 2 message from the ECM with fuel information. The value of this mode is retained during ignition OFF and can be changed between English units and metric units by pressing the ENG/MET button on the radio. The fuel range display cannot be reset.

Fuel Used

The IPC calculates and displays the total amount of fuel used since the last reset of the value.

The IPC receives a class 2 message from the ECM with fuel information. The value of this mode is retained during ignition OFF and can be changed between English units and metric units by pressing the ENG/MET button on the radio switch. Press and hold the Reset button on the DIC switch for one second in order to reset the Fuel Used display.

Instantaneous Fuel Economy (IFE)

Instantaneous fuel economy (IFE) is calculated using the equation: IFE = Distance/Fuel.

The radio receives a class 2 message from the ECM with fuel information. The distance information is calculated by the IPC using the vehicle speed signal from the ECM. The value of this mode is retained during ignition OFF and can be changed between English units and metric units by pressing the ENG/MET button on the radio. The IFE display cannot be reset.

Trans Fluid

The ECM sends the oil life remaining percentage to the radio via class 2 serial data messages. The radio displays the current percentage of the GM Trans Fluid Life System as determined by the ECM. When the oil life remaining percentage drops below 10 percent, the radio displays CHANGE TRANS FLUID. When the transmission fluid is changed, reset the trans fluid life in order to clear the fluid life remaining percentage display. Press and hold the Reset button on the DIC switch for 5 seconds until the radio displays NORMAL 100 percent.

Press the Reset button on the radio for one second in order to acknowledge and/or reset the current radio display.

The radio timer records elapsed time starting from the timer activation. When the radio displays the timer, pressing the Reset button on the radio resets the timer. The timer displays hours, minutes and seconds.

Press the Trip button on the radio switch in order to change the display to one of the following choices:

Trip Odometer A and Trip Odometer B

The radio determines vehicle trip odometer mileage based on the vehicle speed signal (VSS) from the engine control module (ECM). The trip odometer displays accumulated km (mi) since the last reset of this value. The trip odometer is capable of displaying up to 999.9 km (999.9 mi). Trip odometer information is not retained when the battery is disconnected. Press and hold the Reset button on the radio for one second in order to reset the trip odometer display.

For more information on driver information center (DIC) warning messages, refer to Indicator/Warning Message Description and Operation .