Duramax Diesels Forum Truck of the Week
  #16  
Old 11-08-2018, 12:52 PM
1FastBrick 1FastBrick is offline
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Quote:
Originally Posted by Mike L. View Post
I didn't yell. lol
Ok, A stern warning on my bone headedness of running a Tune from an unknown tuner. Lol

Either way the issue was self induced on my end and I did not take it to heart.

Last edited by 1FastBrick; 11-08-2018 at 01:35 PM. Reason: definitely my fault
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  #17  
Old 11-09-2018, 12:05 AM
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raceghost raceghost is offline
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If the transfer case is in bad enough shape, it can cause the output speed sensor to read incorrectly. That can cause the transmission to shift strangely, but shouldn't cause higher temps.

With how heavy you use the truck, I would look into at least a mild build on the transmission. Get a good converter (MikeL can recommend one for your turbo & use case), updated clutches, and the valve body mods to remove the pressure knockdown in lockup. I would also consider a bigger transmission cooler while it is down. MikeL used to sell a kit that is very well regarded, not sure if he still does. I pieced one together with an aftermarket oil cooler from Jegs, and it has served me well.

Just make sure you use large enough lines or you will actually make temps worse, as the transmission will bypass the cooler if it has too much restriction, resulting in NO cooling. And don't bypass the cooler in the radiator, you just replace the stock aux cooler with a larger one. You absolutely need the cooler in the radiator, as it sucks down a massive amount of heat.

Depending on where you are in the US, there are a handful of good transmission shops that will put together a solid Allison build. MikeL is the goto for the southwest, and we can get you recommendations for other regions.
Thanks bud, Im in Idaho
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  #18  
Old 11-09-2018, 12:10 AM
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Quote:
If you keep losing fluid at the back of the tcase yoke, you need to inspect the driveshaft yoke. Its a common problem to get grooved from the seal and leak no matter what seal you put in the t case.
Replaced with a brand new driveshaft last year this time, for I thought the same thing and my driveshaft had thrown some weights and needed rebalanced... Since the truck is leveled and lifted about 3 inches, I had one custom made with new GM yoke... But I will double check that again.
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-Raceghost-
2005 GMC Sierra 2500HD LLY SLT CCSB EFI Live/BDGTCLT w/Sensor Dock
Stock Garrett Turbo/2007 Intercooler
AFE Intake/S&B Turbo Inlet Elbow
MBRP 3" Downpipe/4" Straight Exhaust w/Aero Muffler
CP3 Industrial Injection BagoParts/FASS 150 LP w/Sump
SuperTank 52G Tank w/04 Top Half/05 Bottom half Sending unit
RedHead SGB/Cognito A-Arms/Idler & Pitman Braces/FabTech Tie Rods
ProComp Level Keys/Tuff Country Add-A-Leaf
Hellwig HD Front/Rear Sway Bars/SSM 1" Endlinks
FOX 2.0 Shocks/Firestone Ride Rite Air Bags
285/75/16 Nitto Trail Grapplers
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  #19  
Old 11-09-2018, 07:46 AM
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Quote:
Originally Posted by raceghost View Post
Thanks bud, Im in Idaho
What part of Idaho?
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  #20  
Old 11-11-2018, 11:30 PM
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Poky
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2005 GMC Sierra 2500HD LLY SLT CCSB EFI Live/BDGTCLT w/Sensor Dock
Stock Garrett Turbo/2007 Intercooler
AFE Intake/S&B Turbo Inlet Elbow
MBRP 3" Downpipe/4" Straight Exhaust w/Aero Muffler
CP3 Industrial Injection BagoParts/FASS 150 LP w/Sump
SuperTank 52G Tank w/04 Top Half/05 Bottom half Sending unit
RedHead SGB/Cognito A-Arms/Idler & Pitman Braces/FabTech Tie Rods
ProComp Level Keys/Tuff Country Add-A-Leaf
Hellwig HD Front/Rear Sway Bars/SSM 1" Endlinks
FOX 2.0 Shocks/Firestone Ride Rite Air Bags
285/75/16 Nitto Trail Grapplers
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