Bouncing Fuel Gauge

1995 GMC Safari 4.3 (W) vin AWD. 140,000 miles Just filled up and noticed the gas gauge going crazy. Its my understanding that it could be the sending unit. If this is correct is there an easy way to drain the fuel? Thanks for lookin...

There's a buffer built into the fuel level sender that is designed to dampen the movement of the needle. If the needle is jumping around, the level sender needs to be replaced. It can be serviced separately after removing the fuel pump module from the fuel tank. The easiest way to drain the tank is to drive it ;) the next easiest way is to remove the fuel line from the filter, attach a hose to the line, direct the line into an appropriate container, and jump the orange wire to the grey wire in the fuel pump relay socket.

Thanks for the reply and info old master, I think I can live with it for now, I usually go by millage any way (habit) when it comes to filling up. I think Ill just throw some funds aside and replace the pump and sending unit all in one shot. It cant hurt none, it is a 95. Another rainy day project to add to the list.