The four-speed transmission shifts smoothly, particularly around town. Like other full-size SUVs from GM, the Escalade is equipped with a Tow/Haul mode. Press a button on the end of the shift lever, and the Tow/Haul function reduces hunting between gears by delaying upshifts and downshifts. The shifting is also harder and more abrupt. This saves wear by reducing heat buildup in the transmission.

The Escalade, ESV and EXT are all superb choices for towing. The Escalade AWD offers a towing capacity of 8100 pounds. The big ESV is rated to pull 7700 pounds, while the EXT can pull 7300 pounds.

All-wheel drive increases stability and performance in slippery conditions. The computer-controlled system directs engine power where it's needed and compensates whenever and wherever wheel spin occurs. In dry conditions, the front wheels get 38 percent of the driving torque, and the rear wheels get 62 percent. Whenever a wheel slips, the power is transferred forward or rearward, depending on where grip is best, until traction can be restored to regain that 38/62 optimum split.

The computer-controlled self-leveling suspension, with extra-large high-tech Bilstein shock absorbers, sounds impressive on paper, but we found the Escalade a bit floaty. In the Columbia River valley where wind reigns supreme, the Escalade did not feel as stable as it should have. And you can feel the patches on the freeway more than you might like to. On two-lanes with curves, Escalade doesn't feel as agile as a BMW X5 or even a Ford Expedition. That said, the Escalade feels stable on on-ramps and off-ramps. It doesn't suffer from a lot of body roll. And it'll haul a lot of stuff.

Likewise, the Escalade ESV feels stable on the highway at high speeds, but it feels a little softer than a Suburban, and it conveys a distinct impression of being in control of considerable mass. Perhaps that's because the ESV weighs 5,800 pounds, about 600 pounds more than a Suburban 1500 with 4WD.

Brakes are four-wheel discs with ABS, 12-inch diameter front, 13-inch rear, not ventilated. That doesn't sound impressive for such as big vehicle, particularly if it's headed downhill with a trailer at maximum towing capacity. But the Escalade's brakes felt good in hard use on winding roads and delivered stable performance when pressed hard.

Rear Park Assist makes parking these rigs, particularly the ESV and EXT, much easier. By watching a small row of lights at the rear of the headliner, and listening for an audio tone that varies in frequency, the driver can accurately judge how much room is left behind the rear bumper. We found the system often warned us when someone stepped behind the vehicle while backing up in a crowded parking lot.