LML Duramax Up-pipe Downpipe Replacement

Hello viewers, this video goes through the steps of replacing the failure-prone stock Silverado LML Duramax up-pipe and restrictive stock downpipe with an aftermarket setup. It's not too bad a job, but there are a lot of steps and approaching it with a certain sequence can save you some time and mess in your garage/shop. This video also talks about cleaning up plumbing in the engine bay to make your LML more reliable with less exhaust and coolant leakpoints. Thanks to @TruckMaster for the tip about blocking off the 9th injector feed, that is a great idea.

[@Tannerslone6]

They make the puller for the heater core hose

[@beaupeden5354]

Crazy informative. Thank you for sharing!

[@thomaspaul929]

Does the heat shield have to come off to get the pipe out, the middle bolt I can't even feel it

[@user-hh1zx1ym7z]

15 and 16 had lml

[@christrujillo7203]

What’s this kit for?? It’s kinda confusing on the website what exactly this kit is called…..
But is the considered the PVC reroute that goes behind the intake so it doesn’t recycle into the engine again???

[@StevesFarmShop]

Hello, if you mean the coolant bypass kit, it plugs off several unused coolant supply/return sources that are no longer used once the EGR is pulled. One is at the rear of the block under the turbo and the other is on the RH side of the engine near the fuel filter. I feel it's a more bulletproof solution than the multi-crimp hose mess I showed in the video. I've been getting them from John C Garage: www.johncgaragepa.com/product-page/lml-coolant-bypass-kit

[@CCCC-tq8yo]

I'm first forever