General Motors Corp.'s certified vehicle program sold approximately 39,544 total certified used vehicles in March, including the Cadillac, Saturn, and Saab certified brands. The GM Certified Used Vehicle brand alone posted solid numbers, selling 33,022 vehicles, which is 47 percent higher than last year. "In light of the current economic circumstances, we are pleased with the continued growth of our dealers' certified used business," said John Smith, group vice president of GM North America Vehicle Sales, Service and Marketing. Saab’s Certified Pre-Owned (CPO) Program sold 703 cars in March, which bests its previous record month of 500 cars set in January 2003. For the first quarter, Saab CPO sales are up 172 percent over 2002 (1,644 units vs. 604).