Dealers are absolutely useless when it comes to any kind of help, unless you buy the car from them they could give two sh*ts about you. Most of the time they are stupid and have no clue to what the hell they are saying. I've had so many issues trying to get general information from dealer that i gave up on their minimum wage asses long time ago. As far as your tow capacity, you might be in the low range due to the fact that you do not have the tow mirrors it was not a package that came with the truck. Look for the tranny radiator (little one) to see. The big tow will have the tow mirrors, the temp gauge, and the inter-cooler for the tranny behind the radiator. hope that helps.