I have a 95 blazer that Im replacing the fuel pump on. It has sat for a long time so the lines going from the top of the tank to the sending unit are very rusted. I have the straps off and the 2 rubber hose lines and clamps are removed. The other 2 lines have 2 nuts that are rusted together. I have PB blasted them for days. I know to put a wrench on both nuts because one turns clockwise and the other counterclockwise but which one is which? Am I going to turn the one closest to the tank to the right or left?

 

if I am not mistaken the one closest to the tank goes to the left and the other goes to the right.

 

Thank you! I will get out there and try to get it off tomorrow.

 

They won't budge! I don't know what to do.

 

Normally I would say to heat them with a torch, but not with fuel lines! Your other option is to cut them and splice in a new piece of fuel line. Stay away from the nylon lines, too hard to get connectors on. while you have the tank out of the way, inspect your Brake, Fuel, and vapor lines. They run along the drivers side frame rail and have a tendency to rust through and cause problems. I went after a rusted rear break line and within a year ended up changing all of these lines because of rust through. I'm assuming Kansas puts salt on the roads like Illinois.
If it's a 4 door, don't forget the vent line near the front of the tank.
I just replaced my filler neck and vent tube last month also!

 

yeah they do sell fuel line repair kids for these trucks which involve cutting and splicing. ive had to do it to almost every old chevy i owned.... or just cut a hole in the floor to access the sending unit