I'm pretty sure my sending unit is on its way out.. I was stopped at an intersection earlier at a slight incline..the gauge was sitting just under half. Next thing I know, its on empty and the chime is going off. I leave the intersection when the light changes, and it'* back up to just over 1/4... The needle has been moving a lot lately on hills and turns, so I'm guessing (hoping) its just the sending unit..I really don't have the money right now to afford a new pump/sending unit and the cost to have it installed.. The pump still sounds strong when I turn the key on though..