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2500HD/3500 HD Trucks & Drivetrain Discussion Forum for the 2001 & newer 2500HD/3500 Trucks, Transmissions & Drivetrain

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  #51  
Old 03-03-2011, 07:11 AM
EdSpaek EdSpaek is offline
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Default Line Repair

If your repair kit is from all seasons by chance I installed the aluminun line repair kits over a month ago and have been in some -20 temps with no issues. So far they have worked great. You do have to remove the existing lines from the radiator and aux transmission cooler- suggest getting an extra line retaining clip or two from the dealer before you begin the install they are easy to lose
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  #52  
Old 03-03-2011, 08:12 AM
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mmcm267 mmcm267 is offline
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Ed, it is not Tony's kit. This is the Alligator kit and includes all new hoses and fittings.
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  #53  
Old 04-06-2011, 09:14 PM
Enigma Enigma is offline
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Quote:
Originally Posted by Quack_Addict View Post
I have heard GM issued a bulletin last year relative to leaky transmission lines on our trucks, specifically identifying 2006-2009 model year vehicles. Within that bulletin, they indicate the concern (line leaks) are more prevalent in the cold.

GM released new transmission lines in service that are supposed to be better than the old ones.

20759971 - Pipe Assy, Upper / outlet ($28.07)
20759972 - Pipe Assy, Lower / inlet ($25.60)
20759973 - Hose Assy, Trans Fluid Aux Inlet ($20.46)

My 2006 has developed a line leak with 45k miles on it. I went around the bush with the stealership yesterday about this and the service manager said the best they can do is get GM to pay for the parts if I pay the estimated $270 to R&R the effected lines. What a deal (sarchasm)... I suspect the dealer was going to eat the cost of the line/s just to get some billable labor on the clock.

Funny how a powertrain leak isn't covered by a powertrain warranty... but hey, they finally 'fixed' my intermediate steering shaft the 4'th time in for the same issue. If this is the way of 'the new GM', my `06 was my last new GM purchase.

I have one hose leaking. I emailed gmpartsdirect cause I could not figure out the microfiche. They sent me these numbers for the 3 lines.

Thank you for your emailed inquiry to us at www.GmPartsDirect.com. We look forward to receiving your order. I have entered your supplied information into our licensed GM parts catalog and below are the part numbers requested.
20835127 Automatic transmission fluid auxiliary cooler inlet hose.
20835123 Automatic transmission fluid lower cooler inlet hose.
20759971 Automatic transmission fluid upper cooler outlet hose.


Quack, these differ from your part numbers. Are they giving me the old part numbers instead of the new and improved version?


BTW: It's only like $80 for all 3 lines at gmpartsdirect. The local Allison service center said they would install them 1 1/2 hr labor @ $90 / hr

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  #54  
Old 04-07-2011, 03:37 AM
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mmcm267 mmcm267 is offline
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Here is a DIY write up I did on another forum and you can see the Alligator kit.

It has been installed now for about 2500 miles and I have towed about 1200 mi with it. No leaks, works great.
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  #55  
Old 04-07-2011, 07:06 PM
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JohnC JohnC is offline
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Quote:
Originally Posted by Enigma View Post
They sent me these numbers for the 3 lines.


20835127 Automatic transmission fluid auxiliary cooler inlet hose.
20835123 Automatic transmission fluid lower cooler inlet hose.
20759971 Automatic transmission fluid upper cooler outlet hose.
The 3 numbers I got late last fall were:
20835123
20835125
20835127

Your third number has been superseded.

I paid under $100 including shipping. If you can get them installed for $90, that's a bargain in my book.
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  #56  
Old 04-16-2016, 02:16 PM
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gimpyhauler gimpyhauler is offline
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Quote:
Originally Posted by mmcm267 View Post
Here is a DIY write up I did on another forum and you can see the Alligator kit.

It has been installed now for about 2500 miles and I have towed about 1200 mi with it. No leaks, works great.
I can't find this Alligator Trans line kit anywhere. Can someone provide a link.
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  #57  
Old 11-22-2016, 11:44 AM
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a5150nut a5150nut is offline
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Default

Found this https://www.alligatorperformance.com...n-repair-lines

Kinda looks like what was being talked about

And yes my 06 with 56k on it just got bit by this with 27 degree weather.
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  #58  
Old 11-29-2016, 12:16 PM
Kennedy Kennedy is offline
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I looked at doing my own kit years back, but never really followed through.

This here is the only kit that I have seen that I would consider using:

http://dirtyhookerdiesel.com/i-15131...n-6-speed.html

A bunch of hydraulic hose is NOT the answer.
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