P0304 misfire cyl 4 2010 Buick Lacrosse 3 6

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=XZ9h6Hleu2A

How to replace the coil.I have a P0301,P0302,P0303,P0304,P0305 or P0306 what should I do.The coil is the problem most of the time.

p0304, p0305, Buick (Automobile Make), p0306, Buick LaCrosse (Automobile Model)
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