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Home >> GMC >> 2002 >> Sierra 1500 HD, 4WD >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel, Gauges & Console >> Description & Operation >> Driver Information Center (DIC) Description & Operation >> Fuel Mode >> Instantaneous Fuel Economy

Instantaneous Fuel Economy

The Instantaneous Fuel Economy is calculated from the fuel usage and the distance travelled information from the PCM. The vehicle fuel usage information is transmitted via class 2 to the DIC and the distance travelled is based on the 4 Kppm vehicle speed signal from the PCM.

After a reconnecting battery, the Day/Date/Time will return to January 1, 1998 12:00 AM

Instantaneous Fuel Economy (IFE) is capable of displaying values from 0 to 99 in whole number increments. The minimum displayed data value for the IFE is 0 MPG (English) and 99 L/100 km (Metric).

Display appears as:

Values for the Instantaneous Fuel Economy vary in low speed condition. If the vehicle speed is less than 1.2 mph, the IFE value will display 0 MPG.

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