2009 GMC Envoy Owner's Manual - Page 161

Speedometer and Odometer The speedometer the vehicle speed in both miles per hour (mph) and kilometers per hour (km/h). The odometer shows how far the vehicle has been driven, in either miles (used in the United States) or kilometers (used in Canada). The odometer mileage can be checked without the vehicle running. Press the trip stem located on the instrument panel cluster. If the vehicle needs a new odometer installed, the new one will be set to the correct mileage total of the old odometer. Trip Odometer The trip odometer can tell you how far your vehicle has been driven since you last set the trip odometer to zero. The odometer works together with the Driver Information Center (DIC). You can set a Trip A and Trip B odometer. See "Trip Information" under DIC Operation and Displays on page 3-48. The odometer mileage can be checked without the vehicle running. Press the trip stem on the instrument panel cluster. Tachometer The tachometer displays the engine speed in revolutions per minute (rpm). 3-29