Nope. Common problem on this vehicle and other GM's from that era. The sending unit is usually the root of the problem. FIRST: Check the leads to the sending unit which is on the top of the gas tank, to make sure you don't have a bad or corroded connection. Check the voltage. If not voltage is present, trace the wiring back towards the dash cluster.
SECOND: If everything checks out, it is probably the unit itself. You may or may not have to drop the tank ! ! !! BE CAREFUL ! ! OR ELSE KA-BOOM.... Gasoline is extremely volatile.
ALSO: Check on YOUTUBE.COM for a "how to" video.
Good Luck ! !