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  1. 2020+ LM2 Duramax Powertrain
    Anyone know which Holset turbo is used on the LZ0?
  2. General Discussions
    My 09 LMM that’s deleted with 5 inch straight pipe and PPEI went into reduced power mode after a pop in near WOT. No check engine light, pulled over after the reduced engine power message showed up checked everything it was idling fine and nothing seemed out of the usual except the exhaust...
  3. Turbo's Stock and Aftermarket.
    Hey yall, so I got a 2006 LBZ with the factory turbo still. I was just wondering what kits are out there for possibly going to an s300. I want to go to a non VGT because they are more reliable. The one in the truck now is starting to have problems, The vanes aren't operating as they should be...
  4. 07.5-10 LMM Duramax Powertrain
    So I've got a 2010 LMM that finally has blown one of the boots on the hot side of the turbo (lower boot near intercooler) The kit comes with the boot and two clamps. Question is, I only see one clamp on the tube, the other looks like a solid band. Do I remove that band as well and just replace...
  5. 04.5-05 LLY Duramax Powertrain
    Hi, I have a 05 LLY Duramax with 286,000 km (177,000 miles). The top end was pretty much rebuilt last winter due to broken glow plugs...the heads were taken off in order to remove the broken glow plugs. While they were in there, they replaced the head gaskets, put in gatorback head studs, mbrp...
  6. Transmission Shop
    01 Silverado 2500HD 6.6 turbo. Had a wiring issue and took it to the only shop around here that would touch it since it is an Allison and a diesel. He replaced the wiring for the sensors on the trans, then it needed a new trans computer, then he flushed it and put new fluid in, replaced 3...
  7. Build Threads
    New to this duramax stuff. Got an 11 Duramax with 91k on it. Only thing done is tuned, intake, exhaust and a fass fuel lift pump. Was thinking of cp3 swap and turbo. Any suggestions ?
  8. Parts For Sale
    My new turbo came with a new sensor, this one came off my old one. Was still in working order, factory sensor not cheap aftermarket.
    $80 USD
  9. 2007.5 + (GMT 900) Non Powertrain New Body Style
    Having a strange issue. 310k mile LMM. When the truck is cold the turbo will light immediately. When it’s hot it takes a while to build boost. No codes. No stored codes. stock everything aside from h&s 60hp tow tune. Same amount of throttle on both videos Attached is a google album with videos...
  10. Turbo's Stock and Aftermarket.
    I have a 2016 LML chevy that I rebuilt the stock turbo at 180,000 due to high carbon buildup. the unison ring was frozen and the truck made a squeal while starting and driving. no codes where thrown but I could tell the vanes weren't operating as they should. pulled the turbo and cleaned it up...
  11. 911 Problems Forum
    I drive a 2018 GMC Sierra 2500. I'm wondering if I'm having an issue with my turbo actuator causing my batteries to drain. I know the actuator will run through a couple strokes after initial shutdown when the truck is turned off but I've noticed when the winter brought colder conditions the...
  12. General Discussions
    Hi, I have oil coming out of the actuator cap on my 2007 LBZ duramax. It runs down and drips from the oil pan onto my driveway - couple drips per night. The o-ring cross section is oval shaped. I’ve looked for a specific replacement part for it without any luck. I’ve thought of trying just...
  13. 11-16 LML Duramax Powertrain
    I have a 2015 LML 2500HD with EFI Live Autocal and tunes written by Proven Diesel. I bought the truck this way about a year ago and it has ran pretty flawless for me other than some proximity sensor problems that come and go. The other day I received a P1046 code and bought a can of MAF cleaner...
  14. Turbo's Stock and Aftermarket.
    Truck is an 02 LB7 with a ats stage 3 trans, 30% injectors, air dog, 5 position efi live tune, mishimoto intercooler. I'm not sure if its studded or not but id say it probably is considering it hasn't blown and its tuned pretty hot in the 5th tune. I am wanting to get a slightly bigger turbo...
  15. Maintenance
    so first off i wanna say i had to pass emissions recently so i had to throw the cat back in and all that bs. anyway, ever since i messed with my exhaust doing that (5 inch straight pipe), i have had this bizarre sound coming from the front. now at first i thought nah too much of a coincidence...
  16. 911 Problems Forum
    I need help with this. 2006 LBZ (VIN 2) just had headgaskets, injectors, and glow plugs done. Has had a ticking since before all of this but has now become more noticeable, it is not the typewriter tick. It increases with boost not rpm, starts when boost does and then goes away once the turbo...
  17. 911 Problems Forum
    Had a boost solenoid code ordered a kit with that and turbo vane sensor. Replaced everything was fine. Turbo sounds different when spoiling. When first start up and goes into high idle it kicks off for a second or two and back to high idle. When it kicks off the engine reduce power comes on then...
  18. General Discussions
    I’ve seen a ton of posts on white smoke, but none that fit what my truck is doing. It’s an 05 LLY, EFI live with DSP5 switch, stage 5 tranny, PCV reroute and 10 over injectors. When I have my tune up all the way (position 5) and I get on it it will sometimes blow black smoke, sometimes it’ll be...
  19. 2017-19 GM T-K2 Platform Powertrain
    I've been noticing a decently loud whining noise (almost sounds like a supercharger in a way) coming from the area of the turbo when the engine is cold. Only hear it when I'm accelerating. Once the engine gets to warm operating temp I don't hear it anymore. Doesn't seem to have any noticeable...
  20. 2001 - 2007 (GMT800) Non Powertrain
    Hey y’all, I just bought a aftermarket exhaust brake for my 05 duramax. It goes on my exhaust pipe, and is a butterfly valve that opens/closes to shut off exhaust and work as a brake to slow me down. I was wondering, is this gonna cause premature wear/failure on my turbo with all the back...
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