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  1. General Discussion
    Hello, i’ve got an lbz duramax leaking about a gallon of coolant into the crank case in 5 minutes. I’ve been doing a bunch of research and have seen it can be the water pump and head gasket. i’d like to think it’s the water pump but it was just replaced 3,000 miles ago. I had a shop diagnose it...
    coolant leak crankcase head gasket lbz water pump
  2. General Discussion
    I have been working to replace the water pump on my boyfriends truck. I ran into some issues and a storm rolled in. As of now, I have everything taken apart and even the fuel injector disconnected. This morning I heard a noise like a vehicle trying to turn over repeatedly. I wasn't sure what it...
    help mechanics starting problems truck problem water pump
  3. 06-07 LBZ & LLY Duramax Powertrain
    I just did an engine swap on my 2006 LBZ I replaced everything that turns and supports the engine in any way shape or form I have a horrible whining sound coming from the front of the engine I suspect it's either the new CP3 pump or the new water pump gears it sounds just like a gear drive cam...
    cp3 pump engine swap lbz water pump whining noise
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