Offers end 11/30/13. Buick LaCrosse stock #s: BL674, 675, 676, 677, 678, 679, 680, 681, 682, 683, 684, 685, & 686. GMC Yukon SLT stock#s GY613, 623, 631, & 632. Prices plus TAVT, tag and title, discounts include all applicable rebates and incentives. Offers expire 11/30/13. Service coupon expires 12/2/13.