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Byline: wes raynal
We've had plenty of experience in GM's new lineup of full-size hybrid SUVs. Just before the AW staff took four SUVs to Chicago (see page 38), a less scientific but just as important trip was taken to New York City to celebrate a daughter's 16th birthday. The trip was done in a GMC Yukon Hybrid.
In terms of over-the-road comfort and smoothness, it's hard to imagine a better car in which to do the 20-hour round trip. It averaged more than 18 mpg on the highway, with no special effort on our part to save gas by adjusting our driving techniques. As with the Tahoe the editors took to Chicago, there's no mistaking the hybrid for lesser Yukons, with its different hood, grille and front and rear fascias and the seven-count 'em, seven-hybrid badges and stickers on the exterior. There's another inside, just in case you didn't get it, not to mention an efficiency gauge on the dash (left of the speedometer) and one of those elaborate energy-use graphics available on the nav screen.
The Yukon is powered by an aluminum 6.0-liter V8 making 332 hp and 367 lb-ft of torque. The two-mode arrangement allows for one mode during low-speed driving and another to assist in extra loads at highway speeds. It can move using electric power only, engine power only or, most frequently, a combination of power sources. Add in cylinder deactivation, which cuts the eight cylinders to four at steady-state cruising, and you can actually get some decent mileage ratings in a ...