I want a GMC 2500HD with a diesel and 4X4. I'll go by a dealer and look at the yellow sticker. How much does your's weigh and how much is pin weight. I was looking at a Grand Design Solitude 34" but am also looking at a GD Reflection like yours.Another thought.
Which GMC truck are you talking about (Not that many people here have brand new trucks)?
For example, my SIL has a Ram diesel 4x4 and I have one too.
His is 2500 Laramie and mine is a 3500 Longhorn. Neither is a dually. Very different towing abilities.