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Author Topic: Chevy Transmission Cooler Lines  (Read 2618 times)

Online LaydBack

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Chevy Transmission Cooler Lines
« on: January 13, 2012, 12:05:43 AM »
Took the Dmax to the dealer the other day and it was diagnosed with a bad right front shock and a transmission cooler line leak at the crimp.  The leak is a known issue, but they wouldn't address it under the Certified Used warranty.  It seems that there are some fixes out.  Has anyone had this issue or tried any of the fixes that are not replacement hoses from GM?  For the task at hand of hauling the Outback, and the amount of work involved in replacing the line(s), I'd rather not do another GM hose that's just gonna leak again.  Aparently GM only makes to versions of the hoses, ones that have leaked, and ones that will leak!!!!  Carquest had the hose, and I bought it, but haven't tore into it yet.  I also purchased a pair of KYB shocks, but am considering looking at the Bilsteins before I install them.


LAYD BACK is a way of life
Me, DW, 4 DSs (25, 23, 9, 7)...figured out what caused that...had it fixed!
2013 F350 King Ranch DRW 6.7L
2013 Sabre 36QBOK-7 Platinum Edition
B&W Companion,  Trailair Rotaflex Pinbox, Trail Air Equaflex, JTs Strong Arms, 12 Gallon Water Heater, Dual ACs, Central Vac, Fireplace, Ceiling Fan, Super Lounge, Slide Toppers

Mods: VacPan, 50A Hardwired Surge Guard, Vortex II in Half Bath, MaxAir Fanmate Covers, 26" LED in bedroom, Slide out 32" LED in pass thru, 32" LED in Bunkhouse, Screen Door Grab Bars, 50A Home Hookup w/ Cable & Wifi

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Offline clarkely

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Re: Chevy Transmission Cooler Lines
« Reply #1 on: January 13, 2012, 07:52:58 AM »
Yes I have heard of it!! its a bad crimp connection .... and when you look at it closely it is a stupid cheap part that should be better and have a better fix than that.

It happened to a friend on his GMC Sierra - his is either an 08 or 09 .............. It is my understanding (and i may be wrong on this) that they have changed vendors and on the 2011 and ups it is different and a better design..........

Although your post reminded me that i never looked at that and have only gone by hearsay on that........ Guess i need to check it out first hand :)
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Offline swanny

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Re: Chevy Transmission Cooler Lines
« Reply #2 on: January 13, 2012, 09:39:58 AM »
2007 GMC, yes has been replaced under warranty. Was going to go aftermarket but instead used warranty. It is a big problem for the Chevy and GMC. Just google aftermarket cooler lines for you truck, can buy them at a lot of places.

kevin
2012 Montana 3625RE   07 Gmc 2500 Dmax / Allison
04 Skeeter Fish and Ski w/ 150hp Yamaha
DW Kathy  Goldens, Kobe (RIP) Yogi & Emma
http://OURTRAVELSANDTHINGS.shutterfly.com/


Offline CoolBreeze

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Re: Chevy Transmission Cooler Lines
« Reply #3 on: January 17, 2012, 08:50:29 AM »
Go to diesel place and find a replacement there. Mine leaks but only when it is cold and since I don't look for work to do on my truck that it drips only when I park it outside in the winter then I don't really let it bother me. Someday I'll fix it.

Offline Lad79der

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Re: Chevy Transmission Cooler Lines
« Reply #4 on: January 17, 2012, 11:47:17 AM »
Do the leaks ever lead to complete failure?
2012 Ram 3500 Quad Cab Long Bed 4x4 Cummins 6.7
2011 Outback 277RL

Offline clarkely

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Re: Chevy Transmission Cooler Lines
« Reply #5 on: January 17, 2012, 12:05:27 PM »
yes - they can - happened to my buddy Wayne

The Trail


And then The wrecker
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Online LaydBack

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Re: Chevy Transmission Cooler Lines
« Reply #6 on: January 17, 2012, 12:41:19 PM »
yes - they can - happened to my buddy Wayne

The Trail



And then The wrecker

Exactly my reason for being proactive!
Go to diesel place and find a replacement there. Mine leaks but only when it is cold and since I don't look for work to do on my truck that it drips only when I park it outside in the winter then I don't really let it bother me. Someday I'll fix it.
Been there, quote above is why I'm fixing it now, don't wanna need a wrecker for the truck and the Outback.

I found a local guy to redo all 3 of my lines for $150.  He's gonna cut off some of the metal tube at the crimps, braze on his tube, and recrimp.  I saw the stuff over on duramax forum, but don't wanna go with a fix that's all hose.  I will say that has to be much easier, it was a fight getting the upper line from the tranny to the auxiliary cooler out.  Some people say the 10mm nut holding the clip to the side of the engine is a bear, but it wasn't a problem.  Seeing the clip and figuring out how to get it opened  to get it off the lines, was the problem......$6 for a new clip solved that.  I took all 3 off yesterday evening, DW dropped them off this morning, and they should be done by 2 today.  Hoping to get them and the 2 new Bilsteins for the front on this evening.
LAYD BACK is a way of life
Me, DW, 4 DSs (25, 23, 9, 7)...figured out what caused that...had it fixed!
2013 F350 King Ranch DRW 6.7L
2013 Sabre 36QBOK-7 Platinum Edition
B&W Companion,  Trailair Rotaflex Pinbox, Trail Air Equaflex, JTs Strong Arms, 12 Gallon Water Heater, Dual ACs, Central Vac, Fireplace, Ceiling Fan, Super Lounge, Slide Toppers

Mods: VacPan, 50A Hardwired Surge Guard, Vortex II in Half Bath, MaxAir Fanmate Covers, 26" LED in bedroom, Slide out 32" LED in pass thru, 32" LED in Bunkhouse, Screen Door Grab Bars, 50A Home Hookup w/ Cable & Wifi

[Pics of My Mods]


Online LaydBack

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Re: Chevy Transmission Cooler Lines
« Reply #7 on: January 17, 2012, 08:34:41 PM »
Bilsteins are on, but that same line is kickin my butt again.  Don't wanna put the others in until I get it in......looks like a long night.
LAYD BACK is a way of life
Me, DW, 4 DSs (25, 23, 9, 7)...figured out what caused that...had it fixed!
2013 F350 King Ranch DRW 6.7L
2013 Sabre 36QBOK-7 Platinum Edition
B&W Companion,  Trailair Rotaflex Pinbox, Trail Air Equaflex, JTs Strong Arms, 12 Gallon Water Heater, Dual ACs, Central Vac, Fireplace, Ceiling Fan, Super Lounge, Slide Toppers

Mods: VacPan, 50A Hardwired Surge Guard, Vortex II in Half Bath, MaxAir Fanmate Covers, 26" LED in bedroom, Slide out 32" LED in pass thru, 32" LED in Bunkhouse, Screen Door Grab Bars, 50A Home Hookup w/ Cable & Wifi

[Pics of My Mods]


Online LaydBack

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Re: Chevy Transmission Cooler Lines
« Reply #8 on: January 18, 2012, 10:42:00 AM »
Didn't get done, but here's a few pics of the lines with new crimps, the removed sections, the GM crimp, and the troublemaker clip.











LAYD BACK is a way of life
Me, DW, 4 DSs (25, 23, 9, 7)...figured out what caused that...had it fixed!
2013 F350 King Ranch DRW 6.7L
2013 Sabre 36QBOK-7 Platinum Edition
B&W Companion,  Trailair Rotaflex Pinbox, Trail Air Equaflex, JTs Strong Arms, 12 Gallon Water Heater, Dual ACs, Central Vac, Fireplace, Ceiling Fan, Super Lounge, Slide Toppers

Mods: VacPan, 50A Hardwired Surge Guard, Vortex II in Half Bath, MaxAir Fanmate Covers, 26" LED in bedroom, Slide out 32" LED in pass thru, 32" LED in Bunkhouse, Screen Door Grab Bars, 50A Home Hookup w/ Cable & Wifi

[Pics of My Mods]


Online LaydBack

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Re: Chevy Transmission Cooler Lines
« Reply #9 on: January 19, 2012, 08:35:39 AM »
Success, finally.  What a pain and a terrible design.  I ended asking a GM mechanic friend for tips/tricks to get the top line from tranny to auxiliary cooler in.  The other 2 lines just about fall into place, compared to that one.  At any rate, here's what I had to do to get'er done.
LAYD BACK is a way of life
Me, DW, 4 DSs (25, 23, 9, 7)...figured out what caused that...had it fixed!
2013 F350 King Ranch DRW 6.7L
2013 Sabre 36QBOK-7 Platinum Edition
B&W Companion,  Trailair Rotaflex Pinbox, Trail Air Equaflex, JTs Strong Arms, 12 Gallon Water Heater, Dual ACs, Central Vac, Fireplace, Ceiling Fan, Super Lounge, Slide Toppers

Mods: VacPan, 50A Hardwired Surge Guard, Vortex II in Half Bath, MaxAir Fanmate Covers, 26" LED in bedroom, Slide out 32" LED in pass thru, 32" LED in Bunkhouse, Screen Door Grab Bars, 50A Home Hookup w/ Cable & Wifi

[Pics of My Mods]


Offline clarkely

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Re: Chevy Transmission Cooler Lines
« Reply #10 on: January 19, 2012, 09:48:14 AM »
The silver lining in it all ..... is that at least you know you have the issue addressed and you know how it all comes apart - and hopefully how it all goes back together :)
I'd rather be camping!

Offline swanny

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Re: Chevy Transmission Cooler Lines
« Reply #11 on: January 19, 2012, 12:02:11 PM »
The silver lining in it all ..... is that at least you know you have the issue addressed and you know how it all comes apart - and hopefully how it all goes back together :)

I'd like to get my other two done. Hey Clarkey do you know anybody that has done this work? ;D ;) oh and has a garage to do it in, I would need to take my boat out first, and other stuff.

kevin
2012 Montana 3625RE   07 Gmc 2500 Dmax / Allison
04 Skeeter Fish and Ski w/ 150hp Yamaha
DW Kathy  Goldens, Kobe (RIP) Yogi & Emma
http://OURTRAVELSANDTHINGS.shutterfly.com/


Offline clarkely

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Re: Chevy Transmission Cooler Lines
« Reply #12 on: January 19, 2012, 03:51:54 PM »
I'd rather be camping!

Offline Lad79der

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Re: Chevy Transmission Cooler Lines
« Reply #13 on: January 20, 2012, 11:30:04 PM »
That looks like a lot of work, but I echo what Clarke said. Atleast you know its done and wont be nagging in the back of your mind while you are hauling.
2012 Ram 3500 Quad Cab Long Bed 4x4 Cummins 6.7
2011 Outback 277RL

Offline jevanb

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Re: Chevy Transmission Cooler Lines
« Reply #14 on: February 19, 2012, 09:48:38 PM »
had my replaced before the 36k I have 75k now hope it lasts
2006 silverado CC 4x LBZ
SPD twins

 


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