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    Converter or ECM problem?

    07-08 Duraburb - same shifting symptoms did you solve? Hey, I have an 07 gmt900 LMM Duraburb with the same symptoms. Did you find a solution? It also harsh shifts into 1 when braking hard. It seems to over Rev w/out power at wot, I "false neutrals/gear hunts" over big bumps and so on...