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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
- 94.1M
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
- 48M
- 232K
- 48M
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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.
- 217K
- 44.7M
- 217K
- 44.7M
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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...- 122
- 275K
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DIY: 2500/3500 Van IFS 4WD Conversion
VansVan 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):- 450
- 95K
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LLY: How many miles on your LLY?
Duramax Second Generation: 2004.5-2005 (LLY)Mine: 2005 with 98,017 miles.- 137
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2006 C4500 5 speed to 6 speed conversion instructions
Medium Duty Trucks******Mods make this a STICKY****** Best mod for the money 1. Look at the shift shaft on the transmission. If it does NOT have a electrical switch then you are in luck. (see pic) The transmission has the hardware for six speeds so all you need is the software. (TCM transmission control...- 190
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bamfm7 · updated
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2021
VansSo 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.- 90
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ShopSpecialties · updated
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