I have a 2011 chevy silverado 3500hd, crew cab, 8' bed. Today with 11,500 miles I had 2/3 tanks of diesel and I topped it off at a Flying J gas station. Within 50 miles I got the "Water in Gas" warni...
I don't know if your truck will go into limp mode if there is water in your fuel BUT enough water in fuel can wreck you fuel delivery system and cost you $10,000.
I personally know of 2cases of WIF in Ford trucks and the fuel system was wrecked within 2 miles of filling up. Another was a Chevy that never started after filling up. Water was found in the storage tank where 3 trucks filled up at the same time.