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  1. 02-09 Vortec 4.2L I-6 Engine and Drivetrain
    2008 trailblazer 4.2 vortec burning oil on start up.. I’ve been noticing a very quick puff of blue smoke out the tailpipe when first started, then goes away immediately. Anybody know if there’s a common problem with Chevy Trailblazers for burning oil on start up? Has 70,000 miles- so...
    4.2 vortec blue smoke on start up goes away immediatly when started
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