More on GM's U.S. auto sales report

|By:, SA News Editor

General Motors (GM +0.3%) smashed estimates for May sales with the Buick and Chevrolet both seeing double-digit sales growth.

Sales by model: Cadillac SRX +27.2% to 4,762; Buick Encore +113% to 4,475; Chevrolet Cruze +41% to 32,393; Chevrolet Silverado/C/K Pickup +7.8% to 46,648; GMC Sierra +14.1% to 18,326.

The automaker ended the month with 77 days supply, compared to 85 days a month ago.