Fuel gauge went to empty on full tank and check engine light on
A buddy of mine has an 06 with a Bullet Proof Diesel EGR and Diesel Site coolant filter but otherwise stock truck and has experienced this problem. He let the fuel tank go pretty low and basically empty, refilled the truck to full and drove home. After about an hour he went outside and restarted his truck and saw his fuel gauge drop to completely empty, did not go back to full and the check engine light came on. Curious on any thoughts as to what may be a cause for this before we take it in to the shop to have the DTC read..