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6.5L Diesel Engine

Discuss the 6.5 GM diesel engine & associated components. Automatic transmission questions & problems belong in the 4L80/85 - 4L60E - 6L90 Transmission Forum
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  • 556K
  • 94.3M

Duramax First Generation: 2001-2004 (LB7)

Discuss the first generation (2001-2004 LB7) of the 6.6L Duramax diesel engine & associated components. Engine related discussion ONLY.
  • 232K
  • 48.1M
  • 232K
  • 48.1M

Closed / Archived Marketplace Ads

This is the MarketPlace archive where you can view old ads. Posting is not allowed here If you need assistance please contact a member of Staff.
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  • 239K
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Duramax Second Generation: 2004.5-2005 (LLY)

Discuss the second generation (2004.5-2005 LLY) of the 6.6L Duramax diesel engine & associated components. 2006 LLY engine discussion belongs in Third Generation forum due to the differences of the 2006 LLY and the 2004.5-2005 LLY. Engine related discussion ONLY.
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  • 44.8M
  • 217K
  • 44.8M

6.2L Diesel Engine

Discuss the 6.2 GM diesel engine & associated components.
  • 213K
  • 34.2M
  • 213K
  • 34.2M
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  1. DIY: 2500/3500 Van IFS 4WD Conversion

    Vans
    Van front crossmember & suspension - stock vs Quigley 4WD Stock front bolt-on crossmember (front view): Quigley 4WD front bolt-on crossmember: Stock front bolt-on crossmember (rear view): Quigley 4WD front bolt-on crossmember (rear view):
  2. 2021

    Vans
    So rumor has it the van will get the 6.6 gas for 2021 to replace the 6.0. Looks like the transmission will still be the 6 speed. I am wondering if this combo will push 20 MPG on the highway ? The highest I have seen so far in 4x4 trucks with the 3.73 gear is 16-18 MPG highway.
  3. LBZ: What did you do to your LBZ/LLY today?

    Duramax Third Generation: 2006-2007.5 (LBZ & LLY)
    Very simple- What did you do to your LBZ today?
  4. Info: Proper way to check balance rates

    Duramax First Generation: 2001-2004 (LB7)
    Proper way to check balance rates.... applies to all 2001-2010 DURAMAX's, LML's are as of yet unknown to this testing. It drives me nuts to hear people say there balance rates are good, so how can they have bad injectors? Well they might THINK there balance rates are good, but in reality they...
  5. Trying to avoid DS4 pump replacement

    6.5L Diesel Engine
    Hi, a newbie here. However, I've posted stuff on many a forum about other stuff in the past and people are always super helpful, so thanks in advance. My skill level is "okay" amateur mechanic and trouble shooter. I'm posting maybe a little prematurely, but hoping it might yield an couple...
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