1998 Buick Park Avenue Owner's Manual - Page 145

This gage neasrrres the temperature of your engine. If the pointer moves into the red area, your engine is ~ O O hot. A tenperatwe indicator Bight Wili turn on 2nd a chime wirl sound. TEMPERATURE If you have been operating your vehicle under noma1 driving conditions, and the temperature indicator fight turns on, you should pull off the road, stop your vehicle and turn off the engine as soon as possible.