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2007 chevy trailblazer_ss_3ss
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767 Posts
What exactly did you do for your "tune up"? Which spark plugs did you use? (If you didn't use AC plugs, pull 1 out and check it). Also, maybe a clogged fuel filter?
 

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2007 chevy trailblazer_ss_3ss
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767 Posts
Do you have the "serviceable" fuel filter or the one in the tank?

I would try and determine if it's getting fuel and spark, and go from there.
 
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