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Since 2018 that Duramax Allison you bought, really was a GM transmission

Discussion in 'General' started by Boman Forklift, Nov 4, 2025 at 7:58 AM.

  1. Boman Forklift

    Boman Forklift Well-Known Member

  2. skidooboy

    skidooboy supermotojunkie

    Glad I have a 2017 "real duramax/allison". Ski
     
    StaccatoFan and Boman Forklift like this.
  3. pickled egg

    pickled egg Well-Known Member

    Glad I have a Cummins Dodge with a real truck transmission :Poke: :D
     
    skidooboy likes this.
  4. Boman Forklift

    Boman Forklift Well-Known Member

    Well isn’t your purple truck from the 2000’s?:D You were safe either way.

    I bought a 2002 Duramax around 09 and the transmission was great, but the LB7 Duramax needed injectors 2x while I owned it.
     
    Last edited: Nov 4, 2025 at 8:31 AM
  5. A. Barrister

    A. Barrister Well-Known Member

    I wonder what Roy would have to say about this...
     
    TurboBlew, Razr and BC like this.
  6. TurboBlew

    TurboBlew EeVee range testor and subsidy recipient

    He cant hear you over his pit neighbors shitty gener-noisemaker powering a single incandescent bulb
     
  7. tony 340

    tony 340 Well-Known Member

    No complaints on any of my cummins I6 mated to Aisin trans
     
    Pride & Joy likes this.
  8. ChemGuy

    ChemGuy Harden The F%@# Up!

    I wouldnt buy a new diesel unless i won the lotto...too much $$$ and too much extra BS (DPF, DEF, EGR, etc).

    But now the lack of Allison oversight...i forsee duramax trans issues in a couple years...some bean counter at GM will cheapen the transmission buy $112.29....and cause people to have to spend $5-8,000 on getting the "new, upgraded" parts replaced when they break.

    I love me some Chevy/GM...but those bean counters in charge can really eff stuff up.
     
  9. assjuice cyrus

    assjuice cyrus Well-Known Member

    Its been the same transmission for years. 10speed designed and built by gm, Allison approved of design and build, and gm paid Allison for the name and licensing and ran there badging. Only thing that is changing is no more Allison badge on the trucks.
     
    Phl218 likes this.
  10. 05Yamabomber

    05Yamabomber Dammit Haga

    Marked myself safe from having a GM/Allison transmission in my diesel as I have an F350 baby!
     
  11. Mongo

    Mongo Administrator

    It's funny, only trans I've had an issue with was a 6speed in a Powerstroke, broke the clutch - didn't wear it out - broke that bitch :crackup:
     
  12. Boman Forklift

    Boman Forklift Well-Known Member

    I haven’t opened them up, but this says they changed in 2018?
     
  13. 27

    27 Well-Known Member

    There is an old school WERA racer that also used the best number that was an exec at Allison in Indy… worked his way up the hard way…

    can’t remember his name… can picture his face and race bike… who was it fellas?

    anyway I didn’t realize how big of a company Allison is with such a huge range of products they make for so many applications…
     
  14. Woofentino Pugr

    Woofentino Pugr Well-Known Member

    That stuff will be going away. Hell GM just fixed their V8's for 2026. No more cylinder deactivation system.
     
  15. stickboy274

    stickboy274 Stick-a-licious Tire Dude

    I've been worried about all that stuff. I just bought a really clean 2002 7.3 in case I need another truck. That makes 3 of those, all running and working fine.
     
    05Yamabomber likes this.
  16. Boman Forklift

    Boman Forklift Well-Known Member

    Out of curiosity, if you don't mind sharing, how much did you pay? I have a neighbor that has one and never drives it. He asked me a couple years ago if i wanted to buy it, and i said possibly tell me what you want? I did notice he switched it to montana plates within the past year, so maybe he is holding on to it?
     
  17. tony 340

    tony 340 Well-Known Member

    They're slow as fuck and the transmissions are more limp than a 80yr olds dick.

    That being said, in 20yrs it'll still be running so long as you top off the oil every 2 weeks.
     
  18. 05Yamabomber

    05Yamabomber Dammit Haga

    I live in San Diego County, but out in the country. Horse town. There are many nice 7.3 in my neighborhood still going strong. They are great trucks. Mine is much newer and it is my dream truck (2017), but I have gone through 3 6.0 bulletproofed blah blah to get where where I am now. I have zero complaints about my 6.7, and the transmission. Honestly I do 80mph towing my 28ft toy hauler like there is nothing back there. Such an amazing truck.
     
  19. Ducman851

    Ducman851 Been told I’m that guy, but I’m really not

    Setting yourself up for the “disco glitter party”
     
  20. Boman Forklift

    Boman Forklift Well-Known Member

    Back in 09 when I upgraded from my 01 7.3 to the 02 Duramax/Allison it was amazing how much better I liked the GM product. Within 3 months, I learned how bad their injectors were.
     

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