The 2013 GMC Yukon lineup delivers strong acceleration and good ride quality no matter which model you get, although across the lineup the Yukon's vast size can get in the way of maneuverability and not everyone will appreciate the overly light steering.
A 320-horsepower, 5.3-liter V-8 coupled to a six-speed automatic is the powertrain combination for most of the Yukon lineup. As such, the Yukon and Yukon XL have strong acceleration, with a smooth, responsive transmission. A 403-hp, 6.2-liter V-8 is optional on the larger Yukon XL, and it's the choice for those who plan to tow frequently. It makes the Yukon even quicker and has a deep muscle-car exhaust note, but even with cylinder deactivation technology its fuel economy is unimpressive.
The Yukon family isn't tremendously maneuverable, but the Denali especially handles surprisingly well on back roads; you'll quickly forget that you're piloting a 6,000-pound vehicle that can tow up to 8,600 pounds. Powertrain Gtade Braking, which is added to all non-Hybrid models for 2013, should help with stability when towing as well.
Ride quality is also superb, with motions absolutely smothered by the huge curb weight numbers and in most versions, by a big coil-spring suspension. Denali versions have Autoride, an electronically controlled set of shocks that flatten out the ride without inducing any roughness. Only cornering on choppy surfaces, or railroad crossings, will remind you that it's actually a body-on-frame truck.Keep in mind, if you get the Yukon XL, that you'll have one of the longest vehicles on the market, and fitting into conventional parking spaces might prove a challenge.