Had to replace my gas tank on my 2006, the new tank came from a junk yard. My issue is all the hose clips were broken off the tank, and there is a hose that runs past the tank from eng. to the back of the truck and one hose comes out of the tank and to the back of the truck. There are two tubes coming from over the spare tire. so here is the thing witch hose goes where?
The spare tire hanger has never been used/ or no longer works, I really dont wont to cut all of that up just to hook these two hoses back up.

 

I believe you are talking about the purge vent system.. needs to be hooked up.

 

That looks like the thing, (google search) hoping the hoses hook up the same. But can work out why they would put the thing under/behind the spare tire?

 

Most gas tanks that are in junk yards have holes drilled into them so that the gas can be drained, hope yours is intact. While you are down there inspect the Fuel Pump Driver Module (FPDM) for corrosion damage on the back side, they fail often especially if you a rust belt truck.

 

was thinking about replaceing the whole fuel pump any way

 

Fuel Pump Driver Module (FPDM) is remote from fuel pump, its mounted on the frame crossmember above the spare tire.

 

Its a plastic tank anyway . It should hook up the same as the old one . The connectors are hard to release under the truck . Best to empty tank its big and bulky . The one tube going to the rear is the vent tube I had to cut it and barb fit and clamp it barb together, The main gas line runs in a groove in the top of the tank .That nylon line is very expensive and no longer available its path is to fuel filter we had to make a new one from kits in the help section the connectors at the ends are two different sizes . We epoxied tabs in groove to tywrap hold line ,forget trying to form a new one with heat -it will kink . .
The fuel pump is under spring pressure ,kind of a bear to get it in there and tightened with lock ring . ,i had to grease tabs on lock ears .
Had to jack drivers side way up to get tank out of there. Mine is a super crew you cant pull bed and get to it .