I have a 99 highline that leaks at the filler neck when you put gas in it. Is there a difference in filler necks from metal to plastic tanks?

 

No. The filler neck is a separate component.

The filler neck is attached via a rubber hose from neck to tank, so there is no issue with the metal vs. plastic tank as far as the filler neck part is concerned.

 

I got a filler neck from the junk yard. As it turns out they mount different the 95 96 mount at the filler door with 4 screws the 98 99 mount with 3 screws there wasnt a 97 on the lot so dont know about that one

 

also 98 99 have a gnd strap the other didnt other than that the same. I could use 95 96 on the car but would have to change filler door.

 

At Rockauto.com:

FINELINE Part # FND05 -$74.

FYI.

 

I got a filler tube from junk yard on the car and now i cant put gas in it. the tube fills up and slowly drains, any ideas?

 

Did you hook up the vent pipe? That is what allows the gas to flow quickly. There should be a smaller hose going from a small connector on the side of the pipe to the filler neck top to provide pressure relief while filling your car.