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My fuel gauge never work since I got the truck so I went out bought a new Sending unit from rockauto.com couple days late I drop the tank took out the old install the new one Put the tank back up and turn on the truck and the fuel gauge was working great!! Till I had to go to the store I notice my needle would move up to full then back  to empty then stay in the middle the whole ride was like that so I fill up the tank to see if anything would change and nothing happen. Got in touch with rock auto told them that the sending was bad if they can send me a new one 


did the process again I took off I was told that the sending unit has a arrow on top and it has to be align with the arrow on the tank made sure it was prefect I put the tank back up and still doing the same thing I check the cables that was fine went to the junkyard pull out a cluster got it install and nothing still acting crazy.  

any ideas 

Edited by Dieselmonkey
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