1997 Pontiac Sunfire Owner's Manual - Page 130

Low Coolant Warning Light If this light comeson and stays 'on, your system is low on coolant and the engine may overheat. Malfunl L Indicator Lamp (Check Engine Light) Your Pontiac is equipped with a computer which monitors operation of the fuel, ignition and emission control systems. CHECK See "Engine Coolant" in the Index have your and vehicle serviced as soon as you can. This system is called OBD II (On-Board Diagnostics-Second Generation) and isintended to assure that emissions are at acceptable levels for the lifeof the vehicle,helping to produce a cleaner environment. (In Canada, OBD I1 is replaced by Enhanced Diagnostics.) The CHECK ENGINE light comes on to indicate that thereis a problem and service is required. Malfunctions often will indicated by the be system before any problem is apparent. Thismay prevent more serious damage to your vehicle. This system is also designed to assist your service technician in correctly diagnosing any malfunction.