Subcompact SUV done right for North America BY MARK MAYNARD The new Chevrolet Trailblazer is a social climber in a steep segment of small SUVs that expands the perception and function of a subcompact vehicle. It makes the most of a small space and scoots around on a choice of two turbocharged, three-cylinder engines. It revives the nameplate previously applied to the midsize model discontinued in 2009. But the 2021 Trailblazer is a fresh start...