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  1. The 02-09 "How-To" and DIY Section
    I want to start off by apologizing for the length of this post, but I believe it to be necessary in order to give all possibly important details. So, several weeks ago I noticed my mother's 07' Trailblazer I-6 had a tail light out and when I went to change it, I noticed the plastic housing...
    07' tb dies on idle electrical problem i-6 idle issue
  2. OEM Issues
    GOT MY 2008 TB BACK FROM THE DEALER. HAD BEEN GETTING A ROUGH IDLE MORE LIKE A STUMBLE WHEN SITTING AT A STOP. WENT THROUGH REPLACED PLUGS, NO CHANGE. I WOULD GET AN INTERMITTANT CODE FOR INSUFFICIENT SPARK ON THE #6 CYLINDER. I WENT OUT AND BOUGHT A NEW COIL AND PLACED IT ON THAT CYLINDER, NO...
    2008 trailblazer bad motor i-6
  3. OEM Issues
    As this forum gave me so much in learning about my vehicle, I thought I'd go ahead and give something back, and document my new found knowledge and show you the steps on how to change your 4.2L I-6 Spark Plugs. Note: Common sense would dictate that you go ahead and do a throttle body cleaning...
    2003 envoy 4.2l i-6 spark plugs throttle body
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