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  1. Chevy Silverado Forum (GMC Sierra)
    I got an 2006 GMC Sierra 2500 with the 6.0 vortec. I had to get the engine block replaced because of some gouging in the cylinder walls. I had everything that was good from the old motor put on the new and it ran fine for a while. After like 2 weeks of driving it the rpms move up and down and...
  2. Chevy Suburban Forum (GMC Yukon XL)
    Hey all, going to throw this out there out of desperation. I can tinker on vehicles but I am not a mechanic by any means. Getting the p0300 code for random miss. I have replaced all plugs, wires, and coils before figuring out this code is misfire on random cylinders, so probably fuel or an air...
  3. Chevy Silverado Forum (GMC Sierra)
    I cleaned the MAF sensor, but the engine light came back on after a few miles. I was wondering what to look for next....TPS?.....injector?
1-3 of 3 Results