My old truck was a 2003 Chevy 2500HD Crew Cab 4x4 with 6.0/4L80E and 4.10s. It pulled my jeep on a flatbed reasonably well, probably about 6000-6500lbs. At the time, I was towing with all diesel owners, so they definitely pulled away on hills; but it did fine. Maybe a bit slow at times, but never a risk of not making it.
I think hauling double with a gasser would be some work for the truck. I would expect it to be a dog on hill climbs, but you'd probably get there.
Strangler complains about how doggy his 6.0 is, but mine was reasonably quick unloaded.
Last edited by JohnnyJ; July 31st, 2013 at 08:09 AM.
Reason: yep, it was an 03