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  1. General Discussions
    Been looking forever so thought I would try here. Someone has to have one stashed somewhere haha
  2. 11-16 LML Performance Parts Discussion
    I bought my 2015 duramax last year and it already had the Mini Maxx V2 installed. I was wondering how you change the power level on it. It's in Tow and I try pushing the buttons on the right and nothing happens. I haven't been able to find anything on how to do it. No manuals came for it with...
  3. Exterior
    I’ve been searching everywhere to find these headlights and bug deflector and I’d appreciate any help! Thanks I’m advance!
  4. 11-16 LML Duramax Powertrain
    I have an lml that I can just not get to run right. I bought it and most of the modifications were done other than the turbo. The truck just feels extremely laggy and never lights off. It has no stored codes and runs fine other than no power. I’ve taken it to two shops with no luck. I hop in my...
  5. General Discussions
    Hello, please take it easy on me as this is my first ever forum post! 😀 I have a 2015 LML with 205,000 miles on it. The only mod is a bullydog tuner that I run on tow mode. About 60% of the time the truck is used for pulling my 43' fith wheel (16,000lbs). While in Mexico I begin having signs...
  6. 11-16 LML Duramax Powertrain
    My LML just went into lip mode. Here are all the P-Codes that it is giving me. I am not sure where to start, any suggestions? P0650 stands for “Malfunction Indicator Light (MIL) Control Circuit,” P0381 Glow plug operation will likely be disabled if a code P0381 is stored P2459 error code...
  7. General Discussions
    2016 LML, so do they have lift pumps? I've read they do not, but my dealer service department replaced this item: Fuel Pump Module without Fuel Level Sensor, with Seal - GM (13578388) It looks like a lift pump...I'm confused. here is a photo of the part.
  8. 11-16 LML Duramax Powertrain
    Okay so, trucks runs fine if I drive it normal. But if you call on it and hammer down it runs fine untill you let out. Then the truck starts to white smoke, spudder, looses power, won’t hardly accelerate at all. If you put it in neutral the truck revs fine, as soon as you put it back in gear it...
    lml
  9. 11-16 LML Duramax Powertrain
    2015 lml 6.6L since I had the truck it alway built pressure in the coolant. I had to take the truck to the shop because of a short. (Note when I took the truck to the shop it never smoked.) I took it to a shop and they wanted to diagnose the short and check for head gaskets. They said the...
  10. 11-16 LML Duramax Powertrain
    I have a tuned and deleted lml that is giving me a fit. IT is hesitating till about 2000 rpm under a load blowing black smoke, In park if i put the throttle down it hick ups around 1500 rpm and blows white smoke. I checked data using gds 2, flushed my fuel tank, replaced fuel filter, replaced...
  11. Performance Upgrades
    Hello, I have 2015 lml with a tow tone and I’m pretty new to the diesel world. I got a great deal on a fass 165 and plan on installing it, I’ve done some research and found that running that big of a LP,for what I have, would give me 1/4 tank issues and running a sump would fix it. Wanted to...
  12. 911 Problems Forum
    2014 LML with 25-48k miles So, I've had one of those mystery problems for years. After years of analysis and using an Edge Insight, I can tell that as soon as the 9th (indirect) injector fires for regen, I get a "lost communication with ecm" error and the whole truck goes nuts. The parking...
    lml
  13. New Member Introductions
    Bought truck about 2 months ago, it was blown, needed new rods and bearings. crank as well. Verified that it had power and checked the mileage, was never able to fully turn it over. So...here I am, engine rebuilt, dropped, mounted, gets power. no crank no start. checked grounding wires, and...
  14. 911 Problems Forum
    Hello all I have a 2016 lml fully deleted with ppei and I have been having an issue with random losses of power. You will be driving along and all of a sudden it just goes into a limo mode of sorts except it doesn't say limo mode it just turned into a gutless pile. It has no codes upon a code...
  15. 911 Problems Forum
    Hi so here’s the scoop. As the title says 2016 lml engine keeps losing prime while sitting. Few months ago had the cp3 installed to replace the cp4 preventively (cp4 did not fail). I suspected a “leak” on the suction side bringing air into the fuel system. Found a leak on the fuel filter...
  16. 11-16 LML Duramax Powertrain
    Hello I recently purchased a 2011 sierra 2500 and I’m having an issue with the power steering . I know I have a lot of air in the system as the reservoir was showing crazy air bubbles after top up recently . Previous owner told me the pump was replaced recently and not bled afterwards . The...
  17. 09AB1778-3D2E-4AC4-AF87-414FCBF4E06E.jpeg

    2013 LML Duramax - Jonathan Crabill
  18. 11-16 LML Duramax Powertrain
    I replaced my water pump on my 2012 duramx. When I put the harmonic balancer on I think I over tightened it. Now the back of balancer is rubbing the block. Even if I back the bolt way out. What do I do to fix this?
  19. New Member Introductions
    Hi All, long time lurker and this is my first post. After replacing my front drive shaft and lower control arm, I went to get an alignment done and was told/showed that all my steering components were due to be replaced. I ordered basically all Moog products (idler Arm and bracket, pitman arm...
  20. General Discussions
    I have a 2016 High Country with 175k on the clock. Emissions intact and bone stock aside from leveling and 35s. I would like to start doing some performance upgrades but part of me feels like I’d be putting lip stick on a pig essentially and with that many miles it would be more logical to look...
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