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The 2006 TrailBlazer EXT is a 4-door, 7-passenger sport-utility, available in 4 trims, ranging from the LS 2WD to the LT 4WD. The 2006 TrailBlazer EXT's closest competitors include the Buick Rainier, the Isuzu Ascender 5-Passenger, and the Toyota Highlander Hybrid.
Upon introduction, both trims are equipped with a standard 4.2-liter, I6, 291-horsepower engine that achieves 15-mpg in the city and 20-mpg on the highway. A 4-speed automatic transmission with overdrive is standard.
The 2006 TrailBlazer EXT is a carryover from 2005.