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  1. Performance & Fuel
    I have a 2014 Silverado 5.3 with 105,000 miles. It started misfiring while pulling my camper. I have done several things so far and the misfire while towing is gone but I still have rough idle after it warms up and kind of sputters/hesitates at around 1500 rpms. It runs a lot better but that...
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