General Motors' U.S. sales fell 1 percent last month as winter storms pounded much of the nation.

Buick on display (Gustavo Caballero/Getty Images for Food Network SoBe Wine & Food Festival)

The country's largest automaker conceded that the weather had an impact but said sales started to thaw toward the end of the month.

GM says it sold just over 222,000 cars and trucks, led by the Chevrolet Cruze compact car, with sales up almost 22 percent.

But sales of the Chevy Silverado pickup, GM's top-selling vehicle, fell 12 percent for the month.

Industry analysts expect auto sales overall to rise slightly for the month as most companies report declines or modest increases. Nissan and Chrysler bucked the trend and reported double-digit increases.

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