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Re: 2011 GMC Terrain 3.0L V6 - Cylinder numbering ![]() Posted by pme [Email] ![]() ![]() ![]() In Reply to: 2011 GMC Terrain 3.0L V6 - Cylinder numbering, pme ![]() ![]() |
Thanks guys.
Roger -- no luck finding any marking stamped or printed, but with Justin's comment corroborating what seemed to be the majority of the cylinder diagrams I could find I ordered coils and replaced the front-most bank. That should take care of the even numbered cylinders, and the dealer recently replaced #3 (and in hindsight I should have had them replace 1 and 5 as well. Oh well - another day). Made a huge difference in power and response on acceleration, and the very slight hiccup at idle is gone. Success, I'd say!
I sourced the parts, interestingly via Amazon. Not a marketplace site, but Amazon proper for $37 each. AC-Delco, in individual sealed boxes, parts identical in markings, made by Denso. I will order the other two (or maybe three since they are not expensive) and the manifold seal, and maybe get to the back ones before the weather gets bad.
Thanks for weighing in.
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