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  1. knocking in the morning

    OEM Issues
    I have an early model year '02 Trailblazer LTZ, it now has about 100,000 miles on it and has the 4.2 I6. The issue I am having wasn't there when I bought the vehicle a year and a half ago (with75,000 miles on it). This just started this winter, when I start my vehicle in the morning i hear a...
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