Like I said before you can do it but you will be overloaded ,
I would estimate that 90 % of 1500 series truck people pulling trailers are overloaded and don't even no it , even if its a few hundred pounds .
I see people posting with there 1500 truck some big trailer's and they all say they are in limit's of the payload sticker on the door , there hitch weight probably is but they don't add in the passenger's , gas and any other stuff on the truck " camper top bike's nerf bar's ect, "
shoot I even see some older 3500 trucks pulling big 5th wheel's that I would bet are over loaded , even thow they pull fine the # on the door will say there overloaded .
I guess this all come's down to common sense , some have and some don't
just look at the ford f150 rated to tow 11,000 + lbs it's still a light weight 150 with heavy duty springs but people will push it to the limit's .
I would say 9000 lbs max for a 150/1500 series truck and no more .
I was looking at a trailer with a max weight of 9200 lbs loaded and I decided
that is pushing the limit's on a 1500 so I decided to go to a trailer with a max weight of 7500 lbs to be in the safety zone " that's just me " other's can do what they want .
some play it safe and some don't , it come's down to commonsense
mike