Mine did this once after doing some steep off roading while retreaving a nice 8 pointer. The tank was below 1/4 and it took about 20 miles after filling up for the MTE to read correctly. Is your gauge reading correctly.
I tried today to reset it and you cannot reset the MTE. You can reset the average MPG. Does anyone know what "module" or where the computer is that takes these inputs to display this info? I will swap from my Excursion and see if the issue moves.
I thought it read it from the float so is your gauge on the dash reading correctly? Take a rubber mallet and hit the sides of your tank. Some that have had the float stick after a fill up have fixed it by doing this.
Do you shut off the truck while you fill it up? Mine would act screwy for a while if I didnt do that on my 99.... (Dash gauge would take longer to come up.. but computer would act screwy for longer,,) Just a thought.
Ever figure this out? Mine has the same issue but it was after I had replaced the overhead console computer. Was wondering if there is some configuration that needs to be done or whether there is another sensor that sends the info that went bad while my original OH console computer was down.