Gas gauge problems

One other thing. When you remove your sender, make sure the float isn't full of gas. Could just be a bad float that is sinking in the fuel. When you remove the sender, ground the body of it to chassis and move the float arm up and down. If the gauge reacts, the sender is good and it may just be the float leaked and filled with gas.

My fuel gauge isn't working on my '71 Chev C10. I just pulled it out this past weekend and found that the sender works fine when you move the arm, the float just had a crack in it and filled with gas. Ordered a new float and it's good to go.