You mean number of trucks built? I heard somewhere in the 2-3000 range, but that was just a guess.

And for an update, I'm up to 12,000 miles and have been pulling around a couple of snowmobiles to Mt. Baker, St. Helens and Snoqualmie. Put a coffin style toolbox in with misc gear and tools. It's been running great. Driving is always mixed driving 8 miles to work and 40 or more miles to the mountains pulling a 2 place sled trailer. Average 15-16 mpg, 18 if I'm lucky.

I was wondering if it was worth it to buy a gmc hybrid truck, but i am not so sure if it is worth it. The fuel savings really do not seem to be that much of a savings.

The built in outlets definitely are nice for tailgating, camping, and running power tools. I wouldn't buy it for the gas savings. In my case the dealer was trying to get rid of the truck and offered over 10 grand worth of incentives. The hybrid parts are a bit of a double edged sword. The manual states that hybrid parts are warrantied for 8 years...does that include the electric power steering pump and brakes since they're specific to the hybrid? If so, the extra warranty adds to the value of the hybrid. Batteries not included.