I have one, again. What I'm saying, if you're towing within the recommended weight of the truck, you should never have to worry about turning the AC off or anything. The truck should be built to handle that.
I'm not saying overload the truck, and expect it to not overheat.
Another one bites the dust.. I wish we had a rhyme or reason why this is happening. Welcome to the site Jack.. hate you found us because of a blown motor though. Keep us updated.