Help determining payload of 3500 SRW
 

Hello everyone, 1st time poster.

My apologies to any of you reading this twice, I did post this under the Silverado forum as well, I may purchase either one.

I'm in the process of searching for/buying a 3500 SRW truck to allow me to carry a camper and boat (boat=2500lb total weight, trailer in). I'm having a tough time getting a handle on the actual payload available to me and the police are tight about being overweight around here. I'm not willing to load 'er up on an extra leaf and air bags and be over weight.
I'm most likely going to go into an '06 4 door crew cab long box SRW, prefer gas however the vast majority out there are diesel. I understand GMC's have a sticker in the glove box that specifically gives the max payload? Each vehicle's number will vary depending on exactly what add-ons came from the factory?

What exactly does this number represent? The GVWR minus the curb weight (including gas and driver?)of the truck? Can anyone with this vehicle tell me what this value actually is, and which motor you have with your truck?

The campers I'm looking at make it close...a couple of hundred pounds can make me legal...or not.

Thanks in advance.