PO300 code
#1
PO300 code
I have a 2006 GMC Sierra, and i had the PO300 code pop up when my check engine light came on. I originally cleared the code, and after i changed my plugs it never came back.
Now my moms 2000 GMC Sierra is reading the same code. I know that the code is "random cylinder misfire detected" so i was going to start with changing the plugs on that truck as well. It is running really rough now, and last night i pulled 2 of the plugs, which do have a little build up on them, and the gap is way to big. I plan on changing them to the ACDelco Iridiums since that is the factory plug. Any other suggestions as to what causes this code by itself?
Now my moms 2000 GMC Sierra is reading the same code. I know that the code is "random cylinder misfire detected" so i was going to start with changing the plugs on that truck as well. It is running really rough now, and last night i pulled 2 of the plugs, which do have a little build up on them, and the gap is way to big. I plan on changing them to the ACDelco Iridiums since that is the factory plug. Any other suggestions as to what causes this code by itself?
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