1997 Chevrolet Cavalier Owner's Manual - Page 131
1997 Chevrolet Cavalier Manual
Page 131 highlights
Low Coolant Warning Light If this light comeson and stays on, your system is low on coolant and theengine may overheat. Malfunction Indicator Lamp (Check Engine Light) Your Chevrolet is equipped with a computer which monitors operation of the fuel, ignition and emission control systems. CHECK See the Index under "Engine Coolant'' and have your vehicle serviced as soonas you can. This system is called OBD I1 (On-Board Diagnostics-Second Generation) and is intended to assure that emissionsare at acceptable levels for the life of 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 there a problem and service is is required, Malfunctions often will be indicated by the system before any problem apparent. This may is prevent more seriousdamage to your vehicle. This system is also designed to assist your service technician in correctly diagnosing any malfunction. 2-73