Pontiac 1998 Grand Am Owner's Manual page 240

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CAUTION:
If
you get gasoline on yourself and then
something ignites it, you could be badly burned.
Gasoline can spray out on you if you open the
fuel filler cap too quickly. This spray can happen
if your tank is nearly full, and is more likely
in
hot weather. Open the fuel filler cap slowly and
wait for any "hiss" noise to stop. Then unscrew
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.
When you put the cap back on, turn it to the right
(clockwise) until you hear a clicking sound. 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.
NOTICE:
If you need
a
new cap, be sure to get the right
type. Your dealer can get one for you. If you get
the wrong type, it may not €it properly. This may
cause your malfunction indicator lamp to light
and your fuel tank and emissions system may be
damaged.
See
"Malfunction Indicator Lamp" in
the Index.
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