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    LML Help with hypothetical old tune questions

    Thanks for the information. Good to know on the leak test. As of now I can't justify the add ons for how good it runs.
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    LML Help with hypothetical old tune questions

    So I have some "hypothetical" tune questions that I am curious about, and hope other forum members may help, even via a pm would be appreciated. Quick background I have owned many duramax trucks over the years and am somewhat techie. I recently purchased my 2nd lml and love the truck. But...
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    LBZ: Coolant leak at back of head.

    And we have a winner. I knew the head studs were inside, but yes that leak is coming from the heater core line, thank god! https://youtu.be/7b1D3hDkv7M You can see in the quick video the amount of gunk on my heads, for this being done 30k ago it is surprising, other head on drivers side...
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    LBZ: Coolant leak at back of head.

    Hi all, I have an lbz with a coolant leak in the back of the passenger side head. From what I can tell the valley is dry, and it seems to be coming directly from the head gasket itself, however these were done 30k ago. Sometimes I get no leak, sometimes a few drops, last night was a decent...
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    LBZ: LBZ Shudder clunk thump thud at take off on acceleration.

    I don't follow the both pedals part? When I was speaking earlier basically I was going a steady 20mph then stomped on the gas, this would normally induce the clunk but instead just immediately rolled the tires. May I ask what else you did to yours? My leaf springs are already clamped...
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    LBZ: LBZ Shudder clunk thump thud at take off on acceleration.

    Thanks everyone! I ended up with lucas red and tacky which seemed to work well. I have a 2 piece driveshaft, and greased the middle section up. Also my carrier bearing was off center just a bit so I corrected that. I was going to do the splines where it goes into the transfer case, but a...
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    LBZ: LBZ Shudder clunk thump thud at take off on acceleration.

    I have not greased the splines, I am searching but still a bit confused. I have a 2 piece driveshaft, is there 2 splines I need to lube? And looks like everyone is using the lucas red and tacky for the money? I will tackle this afternoon and pray it helps. If anyone has a quick write up they...
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    LBZ: LBZ Shudder clunk thump thud at take off on acceleration.

    Hey everyone, long time listener first time caller. Been looking here and other places for a while, hoping for help. Been creeping here for a while, 2nd duramax I have owned. Here is my issue... 2007 classic 3500. Recently while chasing driveline vibration issues have replaced all...
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