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2002 Chevrolet TrailBlazer LS 4.2 Liter DOHC 24-Valve Vortec Inline 6
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2002 chevrolet trailblazer ls 4.2 liter dohc 24-valve vortec inline 6Engine trailblazer Car is a 2002 trailblazer. engine periodically knocks when idlingEngine trailblazer 2002 chevy periodically car front chevrolet snapontech.
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![2002 Chevrolet TrailBlazer LS 4.2 Liter DOHC 24-Valve Vortec Inline 6](https://i2.wp.com/images.gtcarlot.com/pictures/73059536.jpg)
![06 trailblazer 4.2 vortec engine knock sound - YouTube](https://i.ytimg.com/vi/twyXPlePgng/maxresdefault.jpg)
![Engine noise | Chevy Trailblazer LS 2002 - YouTube](https://i.ytimg.com/vi/b51rkhFgoPo/maxresdefault.jpg)
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