Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Hi There, I'm Clay a certified master automobile technician with 30 years of automotive repair and diagnostic experience.
From your description most likely the Engine Oil Pressure (EOP) switch is at fault. I've seen EOP failures quite often. Verify there is a 5 volt reference at the gray wire on the EOP sensors 3 wire connector located at the back of the intake manifold.
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