Chevrolet-Buick-GMC-Cadillac Sales Increase 36 Percent in June

June sales for Chevrolet, Buick, GMC and Cadillac increased by a combined 36 percent to 194,828 units in the United States. This is the sixth straight month in which sales for GM's brands increased year-over-year by more than 20 percent. Year-to-date sales for the four brands also have risen 32 percent to 1,069,577 units – an increase of 258,368 units compared to last year.