I purchased my GMC 2500HD SLT 4x4 with the 6.0 engine and locking rear differential to haul my new 8.5 foot slide-in camper. I picked the camper up at the factory and proceeded on a 4500 mile test run. Encountering heavy cross winds in the Dakotas and steep passes in the Rockies had little or no effect on the draiveability of the truck or it's performance. The camper weighs 2370 pounds dry and yet the truck responded with little difference than with an empty bed! Mileage on the way to the camper factory in the midwest ran between 14-16,at speed limit empty and 11-14 with the camper loaded.
The ride and quiet are a big plus! The load capability is great and better than other 3/4 ton HD trucks. The mileage is good for the use I put it to.
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