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  1. 01-04.5 LB7 Duramax Powertrain
    Figured I'd try posting on here before taking the truck in for diagnostics I have 2002 gmc sierra 2500hd stock duramax. Ever since I got the truck it's been lacking power. I have more power while towing with my 1500 silverado than I do with this truck right now. No check engine lights...
  2. 11-16 LML Duramax Powertrain
    so I bought a 2015 LML, truck is deleted but I do not have the actual programmer for it, don't even know what type of programmer was installed to bypass the delete. but I will be driving it and it runs perfectly fine but suddenly losses all power, doesn't throw any codes at all, and when I push...
  3. 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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