Biggest or smallest didn't matter. Sales of medium- and heavy-duty trucks slid again in April.
Sales of trucks in classes 4 through 8 totaled 31,726 units for April, down 13.1 percent from a year earlier.
Sales of both Class 4 and 8 trucks dropped at a double-digit pace. Class 4s dropped 24.2 percent to 6,017 units. Class 8 sales fell 10.4 percent to 11,983.
Sales of Class 6 trucks were gouged the worst, dropping 32.3 percent to 3,898 units. Class 5 trucks sales were the only bright spot, up 9.7 percent to 4,474.
Through the first four months of 2008, sales in classes 4 through 8 fell 26.1 percent from the year-earlier period, to 112,089.
Despite the difficult market, GMC posted a 46.7 percent increase over April 2007, selling 2,127 trucks.
GMC's sales of 4,477 medium- and heavy-duty trucks through April were still 12.8 percent short of its sales pace over the first four months of 2007.
Ford Motor Co. retained its market leadership by a nose. Its April sales skidded 32.9 percent to 6,471, putting Ford just ahead of International's 6,440, down 5.4 percent from a year earlier.