My '09 Traverse with 85k miles. CEL came on, here are the codes: PO300,P0301, PO303, PO306
I cleared the codes, so I'm going to wait and see if they come back.
If they do; I'm thinking it may be carbon deposits on the back of the valves.?
Any other ideas? Thanks
I cleared the codes, so I'm going to wait and see if they come back.
If they do; I'm thinking it may be carbon deposits on the back of the valves.?
Any other ideas? Thanks