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2004 gmc Yukon 5.3


kris504

Question

2004 gmc Yukon 5.3 sending random codes. Id fix what the diagnosis said was the problem then something different pops up. I've changed 02 sensor, gave it a tune up, an the mass air flow, fuel pressure regulator, coil packs spark still somebody told me that can't be it. But nobody can seem to figure it out. It's misfiring an has hardly any acceleration for a V8 help me please 

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