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  1. Duramax Fourth Generation: 2007.5-2010 (LMM)
    I have a 08 lmm duramax 4wd been in the shop for months now fixing all the bs I got stuck with when buying the truck but my mechanic is telling me truck keeps throwing a ground g code he replaces bunch of parts he got it started and drove it for about 20 miles before that code comes up again he...
  2. Introductions & New Trucks
    Hey guys, got a killer deal on a truck that needs head work and a body. Deal was so good he told me to come Fri-sunday or he'd sell it to someone else. I was there (5.5 hrs away) at 8am Friday to load it. :love: Its one of the fastest trucks Ive ever drove and its terrifying because it needs so...
  3. Wheels & Tires
    Howdy guys/gals. What is the biggest tire I can run on my 2020 without any suspension modifications? Thanks in advance for any and all assistance.
  4. Duramax Sixth Generation: 2017-2019 (L5P)
    So I lost my dream truck to a crash. Even the dog is trying to figure out what happened. My second day out on a two week trip. Wife fell asleep and overcorrected just east of Billings Montana on I 94. Thank god for air bags and seatbelts, no one was hurt. If anyone needs a used Duramax diesel...
  5. Duramax Fourth Generation: 2007.5-2010 (LMM)
    So I keep getting a change fuel filter on the DIC. I’m unsure of what’s going on it’s a 2008 deleted with a fassfuel, running on a single tune sometimes it will go into reduced engine power due to this filter had 5000k miles replaced earlier today with a new one but same issue anything??? I’m...
  6. Allison OEM
    Its been a while since I've posted anything here on this revamped board. So here goes: Truck has: 595,750 kms Deep Pansince Apr 2007 Transynd since Apr 2007 TransGo Jr since Apr 2007 Ally has been serviced with new internal filter 4 times since I've owned it. Change spin on with every oil...
  7. Towing
    Looking at possibly switching to a bumper pull one day from a 5th wheel set up. I've been looking at 2 and now 3 hitches and am wondering anyone on here has real world experience and an educated opinion on either one or all of them. The hitches I've so far been considering are.... 1 : CURT...
  8. Duramax Fifth Generation: 2011-2016 (LML)
    Hey guys first with this please be patient i have 2015 duramax the wif light came on so i went to the parts house got a new filter and before i made it home truck went into limp mode i think it runs fine but limited to 2000 rpm i changed filter very little water in it but i got p008 code low...
  9. 3.0L Duramax
    Hi to all. Recently purchased a 2021 Silverado with the 3.0 liter Duramax. We are a light duty user. Seldom carry more than luggage. We live in Northern Indiana. We do a lot of traveling. We are getting ready take a trip out west. Lots of time in Montana. Travel out will be Interstate and 80...
  10. Buying or Selling a Truck Questions
    I’m looking at a 2006 LB7 duramax to throw in my 1958 Apache. The engines $950 cash, what are things I should look for when I go to see it.
  11. Duramax Seventh Generation: 2020+ (L5P)
    I have a 2020 Denali L5P. Seems that there isn't much of anything that can be left ON in the truck to drain the batteries - even if you turn the truck on and don't start it - it seems to shut off in 10 mins. However, this AM both the batteries are dead. (9.2 Volts left on them). I'll...
  12. Closed / Archived Marketplace Ads
    SOLD Our local Pep Boys store was closing, so I bought all of their edge products. I have three of these left, new in sealed box. They are the 85401 CARB approved model, but it is my understanding that they are the exact same thing as the 85400. They will work with 99-15 Chevy GMC Ford or Dodge...
  13. Vans
    Looking for information and advice... Is there a specific bolt up 4in straight exhaust I could use for my 06 gmc savana 3500 ( non extended) . I was told 4 wouldn't.work and just to cut out converter and muffler and use stock size pipe...also looking into a possible programmer. Or a single tow...
  14. Fuel System, Air, Exhaust & Emissions Upgrades
    After 17 years and about 230k it’s looking like time for new fuel lines on my LLY (crew cab short box). Not seeing a lot of straight forward plug and play kits online. Lines to go.com has a few however I don’t see many reviews on their kits. Does anyone have any recommendations on fuel line kits...
  15. Duramax Fifth Generation: 2011-2016 (LML)
    I have this massive squealing sound. Comes and goes with throttle. I will include video for sound. Just installed wcfab y-bridge kit. The noise is louder than the video.
  16. Duramax Fourth Generation: 2007.5-2010 (LMM)
    2007 (new body style) Silverado 2500 6.6L LMM 329,000 miles Original motor, original trans, EGR deleted 3 years ago, no programmer, factory tune. A couple of weeks ago the batteries went out overnight. Truck would not start and batteries would not charge. I replaced the batteries and I have had...
  17. Builds
    So, I'm a middle-aged dad with a wife and 3 kids. For 10+ years now, I've had this car-guy dream project of buying a late 1930's touring sedan, like a big-body Olds or Cadillac, then putting a modern diesel truck drivetrain and suspension under it, a giant air conditioner, and using it as the...
  18. Drivetrain - 2001 - 2010
    Occasionally my abs lights comes on so today I pulled codes and got C0035 and C0040 which is for both front wheel speed sensors. I also have an issue where when I hit 15kmh while braking the abs kicks on a pulses and the truck slams to a stop. Both front wheel speed sensors are reading. Anyone...
  19. Duramax Second Generation: 2004.5-2005 (LLY)
    Was running fine yesterday had plenty of power no loss of power shut off for couple hours started up to go home and truck didn’t have any power? hit the pedal to the floor just real luggish no power but on edge insight still building boost, checked all intercooler pipes and hoses everything is...
  20. Duramax First Generation: 2001-2004 (LB7)
    I’m hoping somebody can help me here as I am a bit stuck, I’ve only ever owned cummins and this is my first duramax and I am stumped. I have an 01 with 220,xxx. I put new injectors in and they have around 20k on them. A couple months back I drove the truck to work, shut it off, and it wouldn’t...
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