1998 GMC Savana Van Owner's Manual - Page 246

While refueling your vehicle, hang the cap by the tether from the hook on the filler door. If'you get gasoline on yourself then and something ignites you could be badly it, burned. Gasoline canspray out on you if you openthe fuel fillercap too quickly. This spray can happen if your tank is nearly full, is more likely in and hot weather. Open fuel filler cap slowly and the wait for any "hiss" noise stop. Then unscrew to the cap all the way. Be careful not to spill gasoline. Clean gasoline from painted surfaces as soon as possible. See "Cleaning the Outside of Your Vehicle"in the Index. ~ To remove the cap, turn it slowly to the left (counterclockwise). The caphas a spring in it; if you let go of the cap too soon, it will spring back to the right. 6-6