2005 Pontiac GTO Owner's Manual - Page 130

Underspeed Chime Overspeed provides a chime when your vehicle's travelling speed exceeds the overspeed value, whereas underspeed provides a chime to indicate when your vehicle's travelling speed drops below the overspeed. Display Units Display units allows you to select the units of measurement in which the trip computer and instrument panel cluster will display information. Tap the up or down arrows to select between ENG (English) or MET (metric) units. Range Range is an estimate of how far your current fuel level will last. It is based on your previous fuel usage and is frequently updated. Therefore, as conditions become suited to more economical driving, the range may actually increase, for example from city to highway driving. DIGITAL SPEEDO (Speedometer) If digital speedo mode is activated, the mph (km/h) are shown in a large digital mode. Stop Watch The stop watch function, when enabled, records elapsed time. It can be used, for example, to measure the time taken to travel between two points on a trip. If you will be starting and stopping your vehicle, the stop watch will automatically start timing where it left off when you last stopped. To start or stop the stop watch, press the SET button. To reset the stop watch, press and hold the MODE button for more than three seconds. The trip computer must be on Trip Time for this function to work. INST (Instantaneous) FUEL This function shows instantaneous fuel usage in miles per gallon or liters per 100 km when driving. When speed drops below 6 mph (10 km/h) the usage is shown in gallons per hour or liters per hour. 3-36