In the ALDL connector behind the cigarette lighter trim
plate there is a terminal that's connected directly to the
fuel pump power wire, bypassing the relay and everything
else. It's labelled in this picture:

http://web2.airmail.net/jsavage1/formula/aldlfuelpumpbypass.jpg

What you first want to do is get a test light, that's one
of those screwdrivers with a light bulb in the handle and
one wire coming out the end with an alligator clip on it,
and connect the alligator clip to a known good chassis
ground. Then, use the tip of the test light to probe the
fuel pump terminal in the picture above while turning
the key to RUN (but not cranking). You should see the light
come on for around two seconds as soon as you turn the key,
then go off again. If it does that then the relay and ECM
are working properly.

If it does not come on you have a problem with the fuel
pump relay or it's driver circuit. If you have A/C you
can swap the fuel pump relay with the A/C relay, they're
on the same bracket on the forward engine firewall just
below the back glass, right about where your left shoulder
blade sits when you're in the car. The two relays are the
same. If you don't have A/C relays are fairly easy to come
buy in the wrecking yard, GM used this relay on millions
of cars.

If you want to test the fuel pump directly you can run a
short jumper wire from the orange wire at the cigarette
lighter plug over to the fuel pump test terminal in the
ALDL connector. After making the connection you turn the
key to RUN and you should hear the fuel pump run contin-
uously, you may have to remove the fuel filler cap to
hear it through the filler neck.

JazzMan