Question about 1999 Chevrolet C2500
I am having issues with the PO300 code showing up. The truck runs good and I only notice a slight miss at start up, other than this the truck runs fine. I have replaced the wires and plugs and the light still comes on. I can run around town for a while and I do not get the check engine light, it seems to come on while running the interstate at the higher rpm's.
Any help would be appreciated.
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Posted on Jan 02, 2017
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