Chevrolet 1995 Astro Cargo Owner's Manual page 114

The fuel gage tells you how much fuel you have remaining when the
ignition is on. When the gage first indicates empty you still have a little fuel
left, but you should get more fuel as soon as possible.
A box around the fuel gage symbol on the digital cluster will begin to flash
when
your tank is 1/8 full or less.
Here are things some owners ask about. None of these indicate a problem
with your fuel gage:
0
At the gas station, the gas pump shuts off before the gage reads full.
The fuel tank will take either a little more or a little less fuel to fill up
The gage moves a little when you turn a comer or speed up.
The gage doesn't go back to empty when you tum off the ignition.
than the gage shows.
I
For your fuel tank capacity, see the Index under "Fluid Capacities."
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