1996 GMC Safari Owner's Manual - Page 237

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. The diagnostic 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 Things Under the Rood NOTICE: If you need a new cap, be sure to get the right type. Your dealer can get one for If you get you. fit the wrong type, it may not or have proper venting, and your fuel tank and emissions system might be damaged. Things that burn can get hot engine parts and on start a fire. These include liquids like gasoline, oil, coolant, brake fluid, windshield washer and other fluids, and plastic rubber. You or others or could be burned.Be careful not to drop or spill things that will burn onto a hot engine. I 6-7