2003 GMC Envoy Owner's Manual - Page 160

Speedometer and Odometer Your speedometer lets you see your speed in both miles per hour (mph) and kilometers per hour (km/h). Your odometer shows how far your 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. Simply press the trip odometer button. You may wonder what happens if your vehicle needs a new odometer installed. The new one will be set to the correct millage total of the old odometer. The trip odometer can tell you how far your vehicle has been driven since you last set the trip odometer to zero. The trip odometer is part of the Driver Information Center (DIC). For vehicles without a DIC, press the stem located on the instrument panel cluster to display the trip odometer. Press and hold the stem to reset the trip odometer once it is displayed. Tachometer The tachometer displays the engine speed in revolutions per minute (rpm). Trip Odometer Notice: Do not operate the engine with the tachometer in the shaded warning area, or engine damage may occur. 3-35