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Black soot in tailpipe:poor gas milage - TrailBlazer Chevrolet Cars & Trucks

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  • bill  willis
    bill willis May 11, 2010

    If you will include the year and size engine, it will be easier to diagnose the problem.

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I would go to another dealer, there is definately something wrong, and a decent technician can scan the system and should come up with your problem. I cannot believe any dealer would say this is normal.

Posted on Aug 07, 2008

2007 trail blazer 4.2 vortex inline 6cylinder engine.
been like this since new.have 1,0000 miles .dealer keeps saying there is nothing wrong.
only avg's 10 miles pere gallon in 2 wheel drive.

Posted on Aug 07, 2008

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