Medium and heavy trucks declined 2% in January, according to figures compiled by Wards Communications.
Dealers sold 44,617 trucks with GVW ratings above 10,000 pounds during the month, compared to 45,371 in January 2006.
Class 6 trucks led the way with an increase of 29% when compared with January 2006 sales. Class 8 was down 4% and Class 7 was down 7%.
Overall, sales were down less than 1% -- 616,245 this January compared to 617,935 in January 2006.
Brisk sales of light-duty trucks (GVW ratings of 10,000 pounds or less) boosted the overall market. Retail sales of Class 2 trucks were up 10%, from 146,372 to 161,346.