All the cars I repair under warranty or transport damage are documented by me and the dealer . Here's the rub , they ony have to disclose the damage if its $1500.00 dollars or more . Now thats here in Illinois it may be different in your state.. If any car comes in for paint problems at any of my dealerships they can tell me exactly if and when a repair was done. Just because it was transport damage (if this is what it is ,and I would bet the house it is ) it should still be warratied by the dealers body shop. Trust me they know exactly what happened to your truck if they were the selling dealer..