The Chevrolet Blazer (4WD model T-10) and the similar GMC S-15 Jimmy (4WD model T-15) are mid-size SUVs from General Motors. Production began alongside the larger K5 Blazer and Jimmy in 1983 and lasted through 2005. In the United States retail sales after 2004 were limited to two-door Blazer models, all other models being sold to fleets, until April 20, 2005. In the Canadian market, four door models of the Blazer and Jimmy were sold until the 2004 model year and until the 2005 model year for the two door models of both.
Source: Wikipedia, 2011