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  1. Truck starts very sluggish (voltage) when cranking

    911 Problems Forum
    I'm scratching my head on this one. It seems that my batteries are not taking a charge. I just replaced both of them in January with 800cca Duralasts. It never acts like they fully charge when I start it up...with or without waiting for the glow plugs. I leave nothing plugged in when I parked...