I need firing order for 2009 5.3 vortec . I want to change sparkplug on # XXXXX cylynder. I pulled code po307 cylinder misfire
Country: United StatesMake: ChevroletModel: Z-71Year: 2009Engine: 5.3 vortec
nothing was going try spark plug first. Also the truck has 52.000 miles
Welcome to JustAnswer, I'm here to help get your problem resolved. Please feel free to ask follow up questions, it is part of the process.The firing order is1-8-7-2-6-5-4-3#7 is rear plug on drivers side.If that does not work I will continue to assist even after you accept as needed.
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