1992 Chevy Astro replace fuel pump

First, drop the gas tank, unplug the connections, use a spanner wrench to remove the lock ring, or a hammer and BRASS punch. Pull out the old pump, dissconnect the wires, noting where the go, install new pump...reinstal lock ring, plug in the connector, install the tank! Try to remove all but about 1 gallon of gas, or the tank will be HEAVY!