rotted fuel lines
My 99 3500 dually leaked fuel for to long, I came accross Nolf Dodge in New Bethlehem PA. The had steel replacment pieces, I dropped the tank ( 2 bolts ) and cut off the rusted lines flush with the module. Then JB Welded the new parts ( which just fit into the top lines ) , let cure for 24 hours and reinstalled with new diesel fuel line and clamps to frame side lines. That was 6 months ago, so far so good, about $20 for parts.