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Mike duval

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  1. Mike duval
    Just wanted to update the forum. After chasing the misfire for so long, I gave up and took it to Chevy and had them run a diag. The tech came back with a bad torque converter. Ordered ($621) and had it replaced with fresh trans fluid, its driving good now. Will update after a few thousand miles. Interesting enough no codes for judder/shudder/slippage. I'm assuming the ecu pulls fuel when it senses the trans starting to slip? FYI this truck only has 50k miles.
  2. Mike duval
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  3. Mike duval
    Hello everyone, I have a 2020 Sierra 5.3 Rwd. Experiencing similar issues as described. Has anyone found a fix? Watched the live data and saw multiple misfires among multiple cylinders, changed the spark plugs and no luck.
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