This morning I was going through some of the papers I got when I bought this motor home. In the papers I found the $4000.00 extended warranty we bought the day we bought the motor home. I took the membership card to our local (mom & pop) RV dealer and they confirmed they do work for my insurer (Protective ExtraRide). I've made an appointment to take the motor home in next Tuesday. I'm not gonna wear myself out trying to solve this water pump problem since I've already paid for the warranty.
When I described the water pump problem to the owner of the dealership he said it is probably the pump.