1997 Chevrolet Camaro Owner's Manual - Page 254

When you put the capback on, turn it to the right (clockwise) until you hear aclicking sound. Make sure you fully install the cap. Thediagnostic system can determine if the fuel cap has been left off or improperly installed. This would allow fuel to evaporate into the atmosphere. See "Malfunction Indicator Lamp" in the Index. Checking ThingsUnder the Yood - - NOTICE: If you need a new cap, be sure to get the right type. Your dealer can get one you. If you get for the wrong type,it may not fit or have proper venting, and your fueltank andemissions system might be damaged. An electric fan under the hood can start up and injure you even when engine is not running. the Keep hands, clothing tools away from any and underhood electric fan. I /A CAUTION: Things that burncan get on hot engine parts and start a fire. These include liquids like gasoline, oil, coolant,brake fluid, windshield washer and other fluids, and plastic or rubber. You or others spill could beburned. Be careful not to drop or things that will burn onto a hot engine.