Pontiac 2003 Vibe - Manual (Page 138)

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Fuel Gage
United States
Canada
Your fuel gage shows about how much fuel is in your
tank. The fuel gage works only when the ignition switch
is ON. When the gage first indicates E or empty, you
still have a little fuel left about 1 or 2 gallons (3.8 L or
7.6 L), but you need to get more right away. When your
vehicle is low on fuel the low fuel warning light will
also come on to remind you to add fuel.