1999 Chevrolet Monte Carlo Owner's Manual - Page 117

yellowblue Engine Coolant Temperature Gage You have a gage that shows the engine coolant temperature. If the gage pointer moves into the red area, your engine is too hot! Low Coolant Warning Light If this light comes on, your system is low on coolant and the engine may overheat. See "Engine Coolant" in the Index and have your vehicle serviced as soon as you can. That reading means the same thing as the warning light. It means that your engine coolant has overheated. If you have been operating your vehicle under normal driving conditions, you should pull off the road, stop your vehicle and turn off the engine as soon as possible. In "Problems on the Road," this manual shows what to do. See "Engine Overheating" in the Index. 2-55