Chevrolet 1994 Astro Passenger Owner's Manual page 226

Lift the hood, release
i c
the hood prop from its
retainer and put the
hood prop into the slot
in the hood.
Before closing the
hood, be sure all the
filler caps are on
properly. Then lift the
hood to relieve
pressure on the hood
prop.
Remove the hood prop
from the slot in the
hood and return the
prop to its retainer.
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