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P0300 code, Random Misfire
i have a 2005 Yukon XL SLT 5.3 flex fuel, recently after a tune up i have been experiencing this , it was off and on kind of thing that was happening...one day running fine no codes , couple days later running horrible and engine light coming on or flashing.. on to the trouble shooting first...- YUKON 808IN702
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- Forum: General Discussion
