Updated from 2:45 p.m. EST

Detroit's automakers reported mixed U.S. sales for February on Wednesday, with General Motors ( GM) and Ford ( F) posting more declines while DaimlerChrysler AG ( DCX) recorded an uptick.

GM reported its sales dipped 2.5% from a year earlier to 301,545 vehicles. Its car sales tumbled 13%, truck sales rose 5% and light-vehicle sales skidded 2.6%.

As for its production plans, GM reiterated that it expects output to rise in the current quarter to 1.25 million vehicles from 1.182 million vehicles in last year's period. In the second quarter, though, the company expects unit production to drop 3.7% from a year earlier to 1.2 million vehicles.

Burnham Securities analyst David Healy noted that GM's sales results suffered from a big decline in sales to fleet clients, but its actual retail sales were up 1% for the month.

"GM is losing market share overall, but mostly because of its fleet sales," Healy says (he owns some GMAC notes). "GM's sales to actual retail customers were up a bit in February, so its total market share is down, but in the units that really count, the results weren't that bad."

Meanwhile, Fitch Ratings added another downgrade to GM. The ratings agency lowered the automaker's credit rating further into junk territory, citing expectations of continued operating losses and declining liquidity at the company.

Elsewhere, the No. 2 U.S. automaker, Ford, said its U.S. sales in February dropped 4% from the same period last year. It sold 244,021 vehicles, as it continued to lose market share in North America. The company saw declines in sales of every brand except Land Rover. Car sales fell 1.4% to 90,938 cars, while truck sales, including SUVs, shed 5.6% to 151,974 units.

Ford said it plans to slash production to 890,000 vehicles in the second quarter from last year's 906,000.

On a brighter note, DaimlerChrysler said its U.S. sales rose 4% in February.

The automaker's Chrysler Group sold 190,367 vehicles during the month, a 3% increase. Meanwhile, its Mercedes-Benz USA division said sales totaled 17,356 vehicles, up 28% from the same month last year.

Shares of DaimlerChrysler recently were up $1.01, or 1.8%, to $56.48. Shares of GM fell 28 cents, or 1.4%, to $20.03; and Ford was down 8 cents, or 1%, to $7.89.