GMC 1994 Yukon Owner's Manual page 106

If your vehicle has an
overhead console with
reading lights, they
can be swiveled to
point in the direction
you want.
To turn the light on, press the button next to the light with
the master
lighting switch symbol on it. Press the button again to turn the light off.
Underhood Reel Light
If you have an
underhood reel light,
it
is located inside the
engine compartment
on the passenger side
fender, You can use it
as a flashlight.
To use the light, pull up on the lever and pull the light out. The cord will
unreel as you pull
the
light.
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