1999 Pontiac Grand Prix Owner's Manual - Page 150

yellowblue Control Buttons The trip computer has three buttons that control its functions. ENG/MET: Press this button to change the display from English to metric units or metric to English. RESET: Press this button for two seconds to reset the mode displayed. MODE: Press this button to change the mode being displayed. AVG ECON: Shows the average fuel economy since you last reset this mode. OIL LIFE: Shows a percentage of the oil's remaining useful life. The system predicts remaining oil life using inputs from length of drives, coolant temperature, engine rpm and vehicle speed. Each time you get an oil change, be sure to reset this function so that it will give you an accurate percentage. See "How to Reset the Oil Life Monitor" in the Index. RANGE: Shows how much farther you can travel with the fuel you have before refueling. When the range displays L, for 40 to 50 miles (64.36 to 80.45 km), the display will flash the word LOW continuously and the vehicle will chime three times. The range is calculated from the average econ value times the fuel remaining in the tank. LOW: This light will come on when the ignition is on and the fluid container is low. Functions PERFORMANCE SHIFT: This light comes on when you press the performance shift button (located on the console shift) to indicate that the vehicle is in performance shifting mode. See "Performance Shifting" in the Index. FUEL USED: Shows the total amount of fuel used since you last reset this mode. The amount can be displayed in gallons or liters. 2-90