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Posted

I have a 2014 silverado with a 5.3 that had a p0202. I think there is a problem with the ecm as there is no injector pulse coming out of the pcm according to my power probe 4. All the other cylinders have pulse accept for number 2. Any thoughts?

Posted

I would inspect the wiring carefully and thoroughly, check the connectors and pins. 

 

I would suspect a wiring fault preventing voltage to the injector before I would suspect a PCM fault. 

 

gmupfitter has wiring diagrams to reference. 

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