bikendan wrote:
very few v-6 SUV's/CUV's are capable of towing a full-height travel trailer, no matter what the specs claim.
Better qualified:
Very few V6 SUV/CUV's are capable of towing a full-height travel trailer, AT THE VEHICLES RATED TOW CAPACITY, no matter what the specs claim.
You could tow a full-height travel trailer that's well below the maximum tow rating, but in this case it is likely that you are at or over the maximum tow rating with this combination.
Probably overloaded too, because normally to tow at the max tow rating, you are using 100% of the vehicle's payload capacity for the tongue weight of the trailer. There is no room left for passengers or bicycles or firewood or things like that.
Good choice on the Sierra. You will be much happier with the 6-speed transmission, 5.3L engine, and 3.42 gear ratio. It will tow like it has a 4.10 gear ratio.