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  1. 2009 Duramax shifting issue

    911 Problems Forum
    Tried posting in Transmission Shop... Hi all, First time I have had an issue with this truck. 2009 chevy silverado 2500hd duramax with allison 199k miles at Diesel mechanic every 6k for maintenance. The facts: Driving normal at slow speeds (City road) when check engine came on. Gear...
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