There's less wind buffeting in the open-air configuration than you'd expect. For this, credit those flying buttress-type, angular diagonals behind the cabin, which channel most of the bluster back to the rear out over the bed.
The Avalanche is a workhorse for routine hauling. The bed is designed to take abuse and offers a 1,355-pound payload rating.
The 2WD model offers an 8,000-pound towing capacity (200 pounds less than last year's model), while the 4WD model offers 7800 pounds. We haven't towed anything with the Avalanche yet but it feels extremely stable and we're confident it'll make an excellent tow vehicle.
The re-engineered, more powerful engines deliver adequate acceleration, very linear. This is a heavy truck and we wouldn't call it quick. The transmission changes gears smoothly, although kickdowns for merging onto freeways or overtaking slower traffic bordered on lackadaisical. Power is up 25 horsepower over last year's model.
The popular 5.3-liter V8 is rated 310 horsepower and 335 pound-feet of torque and gets an EPA-estimated 15/20 mpg City/Highway. It's mated to a four-speed automatic.
The only disappointment came in observed fuel economy improvements versus those promised by the engine's high-tech controller. One element of this computerization enables the engine to run on either regular gasoline or E85, a mixture of 85 percent ethanol and 15 percent gasoline, or any combination of the two. Another, the Active Fuel Management feature, electronically converts the V8 engine to a V4 under light load. Our test time with the new Avalanche did not include access to E85. But over the 300 miles we put on the Avalanche in the week we had it, miles split about evenly between interstate and local surface streets, we achieved 14.4 miles per gallon. And this was without ever towing anything or hauling anything heavier than a week's groceries. As for the Active Fuel Management feature, which electronically transforms the V8 to a V4 under light load, the telltale in the dash information display indicating V4 activation appeared only on downhill grades or while coasting, most often to a stop. This isn't all that surprising, actually, given that engine power drops by more than half in V4 mode. Next Page