Hey all. I have a 01 3500 cab and chassis with an 8.1 L with dual tanks. Fuel gauge quit working on me a while back along with it quit transferring fuel from rear auxiliary tank. Replaced pump and sending unit today along with relay by the fuse block on front wheel well. Still no gauge or transferring fuel! I had it in the shop last week and the codes were cleared from the computer and that made the fuel gauge work for about 3 days then it quit. Anyone know what else could be the issue? Kinda has me wondering if it’s the PCM since the fuel gauge started working after the codes were cleared, but then again it still wasn’t transferring fuel. Thanks for the help!!