You will get lots of answers, but a few things to check.
Check the cargo capacity of the truck on the sticker on the drivers door jamb. From this subtract 100lbs for hitch, the weight of passengers and cargo in the truck and 12% of the max weight of the TT ( not dry weight). If this is still a positive number you are fine. If the weight is slightly over I would avoid mountains or long trips. Do not trust the dealers opinion.
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