Jeep 2010 Grand Cherokee Owner's Manual page 315

CAUTION!
• Damage to the fuel system or emission control
system could result from using an improper fuel
cap (gas cap). A poorly fitting cap could let impu-
rities into the fuel system. Also, a poorly fitting
aftermarket cap can cause the Malfunction Indica-
tor Light (MIL) to illuminate, due to fuel vapors
escaping from the system.
• A poorly fitting gas cap may cause the MIL to turn
on.
• To avoid fuel spillage and overfilling, do not "top
off" the fuel tank after filling.
NOTE: When the fuel nozzle "clicks" or shuts off, the
fuel tank is full.
WARNING!
• Never have any smoking materials lit in or near
the vehicle when the gas cap is removed or the
tank filled.
• Never add fuel when the engine is running. This is
in violation of most state and federal fire regula-
tions and will cause the malfunction indicator
light to turn on.
NOTE:
• Tighten the gas cap about one-quarter turn until you
hear one click. This is an indication that the cap is
properly tightened.
• If the gas cap is not tighten properly, the MIL will
come on. Be sure the gas cap is tightened every time
the vehicle is refueled.
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