December 2012 also marked our best month of the year from a retail sales standpoint. In fact, Chevrolet, Cadillac and Buick posted higher retail sales and all four of our brands posted higher total sales last month compared with the year ago.
Our full-size pickup trucks sold exceptionally well. We sold more full-size pickups in December than in any month since September of 2008, and this gave us truck leadership for the month. We likely achieved our highest full-size pickup truck share of the year with year-over-year sales of the Chevrolet Silverado up 6% and sales of the GMC Sierra up 13%.
We also had our best month for compact crossovers, which underscores the strength of the Chevrolet Equinox and GMC Terrain month-in and month-out. Cadillac continues to build momentum. December was the brand’s seventh consecutive month of retail sales growth.