Question about 2002 Chevrolet TrailBlazer

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While stoped at a red light my engine revs up on it own

While at a standstill my engine revs up on its own

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I would start out by cleaning the throttle body Just remove the air intake tube and spray the butterfly and surroundings with throttle body cleaner scrub with toothbrush and reinstall tube It will start up a little tough the first time but it should clear up shortly

Posted on Mar 21, 2014

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