2007 G5 with P0300, P0301, and P1174

MichiganMike

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Michigan
I've got a 2007 G5 with 80K on the 2.2 ecotec. Check engine light is on with codes P0300, P0301, and P1174. I've already changed the plugs but the codes came back. I've also switched ignition coils for cylinders 1 and 2. After clearing the codes P0301 comes back. Tells me it's not the coil.

Am I looking at a fuel injector issue? Any and all help is appreciated.
 
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