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Replacing #3 & #4 ignition coils

789 views 1 reply 2 participants last post by  Kingoftypos 
#1 ·
While getting my convertor replaced at the dealer, they informed me that these 2 coils are failing. They have not thrown codes yet, but after having killed my convertor from a misfire in #2 cylinder, I want to get this out of the way ASAP. I have an '06 CTS - 3.6l. My question is - is it possible to change these 2 coils without removing the upper manifold? Thanks.
 
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