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GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
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Experience:  GM Grand Master Technician 2007. 14 years experience.
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p300: code intermittent checked cylinders..running rough

Customer Question

03 yukon and getting p0300 code intermittent comes on then goes off checked cylinders at idle and all of them are working properly but still running rough ??????????
Submitted: 6 years ago.
Category: Chevy
Expert:  GMWrencher replied 6 years ago.

Hello, I will do my best to help answer your General Motors Vehicle questions.

2 things come to mind


Intake gasket vacuum leaks


Clogged fuel injectors


Have you had any data scanned and reviewed by a professional?

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