2006 TRAILBLAZER 4.2 makes a tapping noise after the engine warms up.Sounds like it is coming from passenger side of engine towards the front.
Feb 7, 2013 at 10:51 PM
2006 CHEVROLET TRAILBLAZER
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could e valve train or internal.engine noise. have someone with a trained ear listen for you
Roy
Roy
Feb 8, 2013 at 12:58 AM