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check engine light remain on after during and checking ever thing that protein to code PO0300
Vehicle: 2000 Chevrolet 1500 conversion passenger van V8

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Hi there,

This code points towards cylinder misfires on random cylinders. Here is a list of possible causes. 

P0300 CHEVROLET - Cylinder Misfire Detected Random Cylinders

Read more: https://www.autocodes.com/p0300_chevrolet.html

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