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  1. 06-07 LBZ & LLY Duramax Powertrain
    Bought an 06 Topkick C4500 with LBZ motor in a non-running condition. Truck has less than 100K on it. Batteries had been disconnected so no codes. Rebuilt primer and it pumps up good, FRP 9k while cranking. It hits a little while cranking. Where to go from here? Anyone one have a trouble...
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