2004 Chevy 3500 available as SRW
 

(Single Rear Wheel)
I saw one on the road today, and had no idea this was available from GM.

http://www.chevrolet.com/silverado/#3500srw

It looks like you would have to special order it, and not sure if it comes in the LT trim models, but there you have it. It does not appear GMC Sierra offers this.

Yup. Nice truck. I had a 1996 K3500 SRW it was rated at 9200#. It was fine till I got a larger boat :D .

I was just checking these trucks out. They just started making them again in the single rear wheel this spring.
I had a 99 GMC 3500 SRW that I just traded in on a new 2500HD. There are a few of the 3500 SRW on the lots but I went with the 2500 because it had everything that I wanted.
They have the Chevy in the LT.
They also make a SRW 3500 GMC.

Check out http://www.gmbuypower.com/splash.html
you can build what you want or simply search local dealers inventory. I was a little disappointed in that they do not separate the dual rear wheel from the single and you have to look at the stickers for the SRW designation that takes some time.

Cordell