General Motors posted on Wednesday a 22 percent global sales drop from a year earlier for the first six months of 2009 amid the economic slowdown and the automaker's slide into bankruptcy.

GM said its global first-half sales, which include brands the automaker is trimming from its lineup, fell 21.8 percent to 3.55 million vehicles. The automaker's sales in the second quarter fell 15.4 percent to 1.94 million vehicles.

The automaker said second-quarter sales reflected continuing economic pressures and production cuts in the United States. It estimated a 12 percent second-quarter global market share, down 0.3 percentage point from a year earlier.

GM emerged from bankruptcy protection on July 10, concluding a 40-day stay in Chapter 11 with a sale of its key operations to a new company majority-owned by the U.S. Treasury and pledging to win back American consumers and taxpayers. (Reporting by David Bailey and Soyoung Kim, editing by Gerald E. McCormick) all 22 pct in first half of 2009