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Replaced throttle body, spark plugs,fuel filter and gas pedal. No codes
 

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2004 chevy trailblazer_ls
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Codes? Is there a reduced engine power light on?
The gas pedal shares wires with the fan clutch-check them.
 

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2003 Chevrolet Trailblazer LS
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mine was the Cat. unbolt from exhaust manifold and try it no harm
 
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