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2012 3.6l
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  1. 2008-2013 CTS General Discussion
    Hi All I have a 2012 CTS4 3.6L coupe, 115K, bought new, that idles rough at stop lights. It doesn't stall, but almost wants to. As soon as I hit the accelerator, she's fine. Any suggestions would be great! Also, what is the required GAP? Thanks!
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