Leaking transmission lines - Chevy and GMC Duramax Diesel Forum
07.5-2010 LMM Duramax Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine , Transmission Ect

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Old 07-27-2011, 08:28 PM   eBay Motors  #1 (permalink)
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Leaking transmission lines

Does the dealer replace your transmission fluid when they replace the leaking transmission lines? Is the replacement lines a permenant fix? Or do they use the same type which will start leaking again?

2007.5 GMC Sierra 2500 6.6 duramax with Allison tran.
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Old 07-27-2011, 09:56 PM   eBay Motors  #2 (permalink)
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The dealer will just top it off when they do it. Also, the dealer puts the same type of line that came on the truck when you bought it. You can buy a better line but there pricey.

If the dealers gonna do it under warranty then Id just go there.
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Old 07-27-2011, 10:03 PM   eBay Motors  #3 (permalink)
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No, No, and Yes.
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Old 07-27-2011, 10:38 PM   eBay Motors  #4 (permalink)
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Mine started leaking shortly after I bought it, they were not covered under warranty. I did get to see the old lines and the new ones they put on look to have a better design to them.

I think they ran me around $250ish
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Old 07-28-2011, 01:25 AM   eBay Motors  #5 (permalink)
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I think it sucks that everyone has problems with these damn tranny lines. Mine crapped out at 65k and the stealership charged me $450...I know it can be done for less but I don't have time to dink around with fixing my truck. I wish they would get that squared away!
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Old 07-28-2011, 01:59 AM   eBay Motors  #6 (permalink)
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Just go and have some hydraulic lines made and crimped to the specs needed to hook up to the Allison. Alligator Performance and Husker Diesel both sell upgrade kits that are a permanent fix with good fittings on them to solve the problem. I crapped out with less than 40k on the truck, I just had a set made and installed by DTS from Goodyear high pressure hydrualic lines. Larger internal diameter with a bit more flow, problem solved!
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Old 07-28-2011, 04:26 PM   eBay Motors  #7 (permalink)
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Exclamation

Get rid of the DEX VI as quick as you can and replace it with Allison Transynd fluid or Amsoil Torque Drive.
Dex6 is the major cause of all the damn trans line leaks.




Quote:
Originally Posted by Duramax007 View Post
Does the dealer replace your transmission fluid when they replace the leaking transmission lines? Is the replacement lines a permenant fix? Or do they use the same type which will start leaking again?

2007.5 GMC Sierra 2500 6.6 duramax with Allison tran.
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Old 07-28-2011, 09:38 PM   eBay Motors  #8 (permalink)
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Quote:
Originally Posted by KB3MMX View Post
Get rid of the DEX VI as quick as you can and replace it with Allison Transynd fluid or Amsoil Torque Drive.
Dex6 is the major cause of all the damn trans line leaks.
1. He never said he had Dex6.

2. I never heard of that before.
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2006 Silverado 2500HD LBZ CC SB
Exterior: Escalade Handles, Front windows tinted to match the rear, painted bumpers & mirrors, billet grille, 305/50/20 Cooper Zeons on BMF Novakanes Death Metal, Cognito Braces, Stainless Sleeves, Train Horns
Interior: 4 Kicker 10in Subs in 2 custom box's, Autometer Ultra lite II Pyro and Boost gauges, Aeroforce Interceptor Gauge, HID Lows & Fogs, Painted accents
Performance: EFI Live Tuned by Blackout Performance, Custom Blackout Performance S475 over stock twins, 45 over stock injectors, MBRP Turbo Back Stainless Exhaust (Straight piped), Raptor Lift Pump, AFE Filter, GMAX6 kit with Suncoast 1057 converter installed by Blackout Performance
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Old 07-28-2011, 09:41 PM   eBay Motors  #9 (permalink)
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Originally Posted by Hondarider552 View Post
No, No, and Yes.
Does it have to be in that order?
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Old 07-28-2011, 10:23 PM   eBay Motors  #10 (permalink)
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Quote:
Originally Posted by KB3MMX View Post
Get rid of the DEX VI as quick as you can and replace it with Allison Transynd fluid or Amsoil Torque Drive.
Dex6 is the major cause of all the damn trans line leaks.
Dex 6 isnt the reason why the lines leak, the crimp is. I have Transynd in my LBZ and the lines leaked..
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Does it have to be in that order?
Yes.
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