Question about 2005 GMC Envoy Xl

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What is the gap for a spark plug on a 2004 gmc envoy?

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  • emily_reyes7 Mar 22, 2011

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.040 to .044" would be normal. The gap should listed on the emission sticker under the hood. Make sure you use the O.E. AC/Delco plugs. This engine will run on those the best!

Posted on Mar 20, 2011

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