#p0300

  1. laredo1307

    96 Tahoe Random Misfire P0300

    Hello Gentlemen, I'm at a loss on trying to find the source of my misfire. The strange thing is it only happens when I fire it up in the mornings and will last my whole commute to work, which is about 30miles. It only throws a P0300 code and something is definitely telling it to dump too much...
  2. A

    P0300 random misfire

    Hello. I am having issues with a 2005 Tahoe 5.3. The truck starts and runs fine for a few minutes and then out of the blue it will throw p0300 and randomly misfire. The truck will misfire for a few minutes and then run perfectly fine after. If I watch the misfires I’m live data when this occurs...
  3. M

    07 yukon 5.3l flex p0300 after lots of money spent.

    I have an 07 yukon 5.3l flex fuel with 195,000 miles. I know the P0300 code has been addressed a lot but mine may take the cake and I’m lost. I spend $4800 to have lifters replaced by certified mechanics. Heads were milled and the repair was done correctly. I had 2 lifters go bad and had...
  4. RayRaysJukeJoint

    2015 6.2 misfire on #8 Help please.

    I have a 2015 yukon xl with the 6.2. It started misfiring on 8 and so far I have done the following. 1. New Plugs 2. New Plug Wires 3. New Injectors Still, the misfire is there. I get the P0300 and then the P0308 code and I am at a loss as to what to try next. Oh and I swapped the coil out...

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