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RustyPile · 02-15-2023, 08:43 PM

Have you discussed with PSI the possibility of a defective harness?? Since the ECM will run in another vehicle, the problem almost has to be with your vehicle..

Something is preventing the ECM firing the injectors.. Sounds like the ECM is "seeing" a wrong feedback somewhere... Pick a shop that has the experience working with these type issues and possibly one that has experience tuning (modifying) GM engine management systems.

02-15-2023, 08:43 PM	#34
RustyPile Registered User Join Date: Dec 2017 Location: Elkhart, Texas Posts: 1,577	Re: No start issue Have you discussed with PSI the possibility of a defective harness?? Since the ECM will run in another vehicle, the problem almost has to be with your vehicle.. Something is preventing the ECM firing the injectors.. Sounds like the ECM is "seeing" a wrong feedback somewhere... Pick a shop that has the experience working with these type issues and possibly one that has experience tuning (modifying) GM engine management systems.