GMC 1994 Sonoma Owner's Manual page 225

Then go to the front of
the vehicle and release
the secondary hood
release.
I Lift the hood, release
the hood prop from its
retainer and put the
hood prop into the slot
in the hood. You will
have an underhood
light that comes on
when you lift 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-
6-7