I need to replace the number 2 injector on my 2007 cobalt
If you are wanting to locate the #2 injector you don't need the firing order. You just need to know where number 2 cylinder is. If it is a 4 cylinder engine the number 2 would be the second on from the passenger side of the car. The number 1 cylinder is at the passenger side and the number 4 is nearest the driver's side.
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