Was able to get the truck into my trusted mechanic. Nothing wrong with it after inspecting high and low. All hoses, etc. look good. Did a pressure test of the coolant system and everything checked out. Topped off the coolant reservoir, going to keep an eye on the tank and go from there. Has been given the seal of approval to hit the road! Maybe my LR paranoia strikes again... Thanks to everyone for their input. Happy Holidays!