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  1. 2011-2016 (Non Powertrain)
    I'm embarrassed to admit that I live in Southern California, but it's true, at least for a little longer. My 2012 GMC CCSB LML is approaching 100,000 miles and I tow a 5th wheel on both short and long family road trips several times a year. I've decided to go ahead and address the faulty CP4.2...