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How can I fix the code P1228 on my 2004 GMC Envoy 4200?

Vehicle: 2004 GMC Envoy 4200

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P1228 Injector number 3 cylinder intermittent

This is for the fuel injector being intermittent, GMC does not use this code, can you recheck the code. it possible the code was P1258
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P1228 GMC Code - Injector Circuit Cylinder 3 Intermittent
Read more: https://www.autocodes.com/p1228_gmc.html

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