Towing up hill smell.

[Jackiseverywhere]

I have a 2014 ram 1500 BH with about 70k miles. I have pulled a 30 foot toy hauler to ocean city MD and back with no issue. This time towing TH I got a burning smell when going up hill. All temps on vehicle info seemed the same as on trip to MD. Otherwise no power issue or anything else wrong I do need an oil change too.. any advice is appreciated.

 

[SniperDroid]

Maybe transmission fluid? Check and smell it.