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Steve_0770

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  1. Steve_0770
    I’m having the same issue with my 2023 Sierra 5.3 dealership changed a valve in the transmission and a new torque converter. But vibration still comes and goes. But only when the active fuel management is engaged. It’s very annoying. Dealership is contacting GM engineering about it. Under light load at about 1100rpm truck vibrates. Shop foreman felt it and said that definitely wasn’t normal. still no fix yet. Wondering if I can just get the AFM deleted somehow.
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