The Big 3 increased their certified pre-owned sales by more than 21 percent in February, pulling in 65,323 CPO sales and lifting their market share to 36.5 percent for the month, according to Autodata Corp.

In February 2013, domestics sold 53,799 certified vehicles and commanded 34.3 percent of the CPO market.

Year-to-date sales for the Big 3 are just under 125,000 units, up 21.7 percent from the year-ago period.

The biggest sales increase for the month among the three Detroit automakers was at Chrysler Group, where its brands combined to sell 11,506 units for a 23.3-percent year-over-year gain. In two months of 2014, it has sold 22,232 CPO units (21.7 percent)

The Dodge brand led the way in February with 5,383 certified sales (up 19.8 percent), Jeep moved 3,923 CPO vehicles (up 35.8 percent) and there were 2,200 Chrysler-brand CPO sales (up 12.9 percent).

The Fiat band, whose sales are not included in the aforementioned results, saw 26 CPO sales for the month.

At General Motors, its Buick, Chevrolet, GMC, Pontiac and Saturn CPO sales totaled 32,069 for the month (up 19.1 percent) and 60,577 year-to-date (up 19.7 percent).

There were 1,549 Cadillac certified sales in February (up 7.6 percent) and 3,086 through two months of 2014 (up 8.2 percent).