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  1. jwwarren

    Transmission downshifts--or not

    This lag is part of the factory programing. It is to reduce clunks to drivetrain.
  2. jwwarren

    Transmission slipping 2016 Denali

    The new 8 speeds are having all kinds of problems. Keep checking back with the dealer to see if they have a new programing. I would like to see the paper work they gave you. I have not heard of this 4X4 issue.

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