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restriction indicator
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  1. V8 Engine & Drivetrain
    Ever since a saw a pic of ahelm3's 2009 LH8 engine I've been curious about the air flow indicator on his truck and why my 2009 LH8 doesn't have one. @ahelm3 Well, from what I can tell GM had these air flow indicators on the early LH8 motors (2008-2009) and then sometime mid-year of 2009 they...
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