Kicking off this month are the 2013 Chevrolet Tahoe and GMC Yukon. These SUV twins offer seating for up to nine passengers, as well as an EPA-estimated 15/21 mpg city/highway. Both brands are offering a $2,000 customer cash incentive when you finance through Ally Financial Inc. with an APR above 3.9 percent. That's pretty doable. Although they are very similar, the Chevrolet comes in under the price of the GMC, but not by much. For vehicles that start out just over $40,000, that incentive doesn't look so big, but when using it as a down payment, it takes the edge off, bringing down the price to something that is a bit more manageable. But hey, you wouldn't be buying one if you couldn't afford it in the first place. Hurry up, though. This offer ends at the end of the month.