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How do you fix the po300 dtc on 2001 Chevy with 6.0?

Anonymous

∙ 15y ago

Updated: 10/22/2022

That code means; Engine missfire detected.
First check the plug wires and the spark plugs. That would be the most common problem.
You may also have a bad coil on that cylinder. If you get the engine scanned it will tell you what cylinder is missfiring.

Wiki User

∙ 15y ago

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