In this undated photo provided by General Motors Co., the 2011 Chevrolet Impala LTZ, is shown. GM sold 28,172 of its Chevrolet Silverado-C/K pickup truck, up 24 percent, and 15,188 Chevrolet Impalas, ... more 
In this undated photo provided by General Motors Co., the 2011 Chevrolet Impala LTZ, is shown. GM sold 28,172 of its Chevrolet Silverado-C/K pickup truck, up 24 percent, and 15,188 Chevrolet Impalas, up 39 percent. The two were the most popular models during the month of January, 2011. less 
1 / 1
Associated Press | Photo By General Motors Co.
Tue, Feb 1, 2011 2:03 PM EST