1996 Cadillac DeVille Owner's Manual - Page 267

When you put the cap back on,turn it to the right until you hear at least three clicks. Make sure you fully install the cap. .CheckingThings Under the Hood A CAUTION: An electric fan under the hood can start up and injure you even when the engine is not running. Keep hands, clothing and tools away from any underhood electricfan. NOTICE: If you need a new cap, besure to the right get type. Yourdealer canget onefor you. If you get the wrong type, it may not fit or have proper venting, and yourfuel tank andemissions system might be damaged. A CAUTION: Things that burn can on hot engine parts and get 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 be burned. Be careful not to drop or things that will burn ontoa hot engine.