The coolant reservoir tank was replaced the first time this happened when the truck had miles in the 50k range and wasn't covered by warranty which was BS. Now at 110k Mike's it's happening again. $70k trucks shouldn't have these problems. This is obviously a design and manufacturing flaw that could not be caused by normal use. A redesign is probably warranted. Obviously sensors should not go out like this and if they do should be able to be replaced without replacing the entire tank at great cost and extensive labor