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  1. Check engine light trouble code p0521? - GM Truck Club Forum

    Dec 16, 2014 · I had the check engine light to come on yesterday and I stopped @ Oreilles to check for the code. The code reader picked the code as p0521, has anyone experienced this code before? …

  2. AFM Misfire P0300 code, Service Stabilitrak/Traction...

    Apr 26, 2017 · I am working on a 2007 Chevy Tahoe, 4WD, 5.3L engine with RPO code LMG. It came in with codes P0300 and P0521. It had a valve train noise and I was able to isolate it to the passenger …

  3. Check engine light trouble code p0521? - GM Truck Club Forum

    Mar 24, 2015 · I had the check engine light to come on yesterday and I stopped @ Oreilles to check for the code. The code reader picked the code as p0521, has anyone experienced this code before? …

  4. 2013 Silverado 5.3l low oil pressure CEL | GM Truck Club Forum

    Mar 8, 2022 · After replacing the oil pressure switch roughly a month ago the oil pressure has been holding ~25-30 psi around 2000rpm, and ~10 at idle. Recently this has dropped to ~20 at 2000 ram …

  5. 2004 silverado 5.3 random misfire p0300 code - GM Truck Club Forum

    May 23, 2018 · I had a random Misfire code on my 2000 chevy silverado, Except it was at higher rpms. It was a p0300, most misfires were on 5 and 8. I unpligged the Maf and it ran better, most gm vehicles …

  6. Evap Problems P0442,P0446,P0455,P0496 - GM Truck Club Forum

    I have a 2003 silverado 15004.3L it's throwing codes P0442,P0446,P0455,P0496 I have changed the charcoal canister vent valve, purge valve, gas cap reset the...

  7. lean codes P0171 + P0300 - GM Truck Club Forum

    Mar 10, 2009 · P0171 is fuel trim lean upstream oxygen sensor left cylinder bank. P0300 is engine misfire.I would check fuel preassure and fuel regulator first for leak down, may have a bad injector on …

  8. DOD AFM delete done, now problems!!!! | GM Truck Club Forum

    Feb 13, 2019 · So after getting the dreaded lifter issue (Cylinder 6) I decided to put a reman engine in with the DOD/AFM delete, so hopefully this wouldn't ever happen again- and due the fact that I had …

  9. P219A - GM Truck Club Forum

    Jan 4, 2022 · Come to find out my engine wasn't drawing enough air flow into two of the bank one cylinders due to the intake valves not fully opening, thus the air/Fuel imbalance code. After replacing …

  10. Infamous oil pressure | Page 2 | GM Truck Club Forum

    May 8, 2017 · P0521 is telling you the oil pressure is bad ..no answer on what oil used .. not gonna get help .. need GM dexos engine oil spec .. communication problem ?