Welcome to the world of MATH and Physics
You need lot's of numbers and ratings to start out...
What are the gvwr, gcwr, front and rear gawr, and actual axle weights of your tow vehicle? as well as the cab configuration - CC 2 door, etc ???
here's a start --> http://www.nadaguides.com/Cars/2008/...-LTZ-4WD/Specs
Max Towing Capacity 9,800 lbs
Curb Weight 5,853 lbs
Gross Vehicle Weight Rating 9,200 lbs
Max Payload 3,347 lbs
What are the pin wgt, gvwr, and ACTUAL weight of your rv?
this may or may not be correct for the rv:
Carrying Capacity 4380
Hitch Weight 2,265
Axle Weight 9,855
Exterior Length 34' 9"
but it's a start to your calcs
but, at first glance, if the max towing capacity for your truck is 9800, you will be seriously overloaded with a 16k trailer even if it only weighs 13k
Sorry - HORRIBLE that a salesman did that to you, that borders on fraud !
on edit - this has already been answered --> http://www.redwoodowners.com/forums/...ead.php?t=2114