I'm out west towing 5th wheel. Truck is 11k loaded and hitched. 4 people. 5th is 9950 this was loaded full fuel and water no grey or black. 4 adults. Took truck up pikes peak. transmission went to 220. Did I hurt it. Can I go higher. Coolest has gone to 220 towing. People out here tow bigger and faster. I want to know when I am in danger zone for transmission and engine. I got no warning lights. If I have any. Sorry I am doing this on a phone am in Colorado now