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Transmission cooling lines leaking

2010LTZ4x4

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2010LTZ4x4 Enthusiast

2010LTZ4x4

Posted
Posted

I'm going to replace the tranny lines that are seeping at the metal/rubber joints. Is there anything out of the ordinary when changing them out that I need to know. eg. how much tranny fluid will I loose, special tooling to undo the lines, do I need to worry about air pocket in the system after putting the new lines in? etc.

scooby5121 Enthusiast

scooby5121

Posted
Posted

Not under Warranty?

 

Engine mount has to be loosened........ bring it in for warranty

Your from Ontario, should still be covered.

2010LTZ4x4 Enthusiast

2010LTZ4x4

Posted
  • Author
Posted

No thanks on the dealer, I'll get the new lines and do it myself. Had enough bad experiences with the dealer mechanics with the wifes van. My truck has not been to the dealer yet and I'm not going to start unless I really need to.

scooby5121 Enthusiast

scooby5121

Posted
Posted

No thanks on the dealer, I'll get the new lines and do it myself. Had enough bad experiences with the dealer mechanics with the wifes van. My truck has not been to the dealer yet and I'm not going to start unless I really need to.

There are some posts in here where they make new lines because the factory lines always let go at that crimp. The fix is actually cheap, they buy fittings and they say it eliminates the poor factory design crimp.

A line set is only sold in a set for the tranny, so there should be only one part number if I can remember from stock.

It Runs between the engine and the frame so thats why you have to loosen that area to get them on out and replace. All said and done they cost approx. 280.00 from a respectful auto shop.Other than that a couple wrenches and do not overtighten, Also a retaining clip on the fitting that has to come off,

Where in Ontario, I am in Oakville.

CKNSLS Enthusiast

CKNSLS

Posted
Posted

Don't know about Canada...but many posts from owners in the U.S. saying "The dealer won't cover-it's a normal wear item".

MikeNH Senior Enthusiast

MikeNH

Posted
Posted

It's pathetic after all these years the crimps on GM oil/fluid lines are still crap. I had to change the engine oil lines on my 1998 Jimmy for that. Can't believe they can't get it right still.

wtbrowne Enthusiast

wtbrowne

Posted
Posted

After market sources are available that offer much better quality than the OEM lines. No special tools are required and the motor mount does not have to be loosened. The link below shows the set that I used. Fairly simple for the novice mechanic and can be installed without a lift. You will need to remove the right front tire and the wheel liner. You'll lose about two quart of trans fluid during the install. The second link describes the process step by step with good photos to keep things clear. Once you have quality lines, you'll never need to do this again. The install is the same for 2001 through 2013 trucks.

 

https://www.alligatorperformance.com/Transmission-Repair-Lines-s/2444.htm

http://www.duramaxforum.com/forum/how-tos-diy-write-ups/87933-how-alligator-tranny-cooler-hoses-kit-install.html

TooTall1 Enthusiast

TooTall1

Posted
Posted

After market sources are available that offer much better quality than the OEM lines. No special tools are required and the motor mount does not have to be loosened. The link below shows the set that I used. Fairly simple for the novice mechanic and can be installed without a lift. You will need to remove the right front tire and the wheel liner. You'll lose about two quart of trans fluid during the install. The second link describes the process step by step with good photos to keep things clear. Once you have quality lines, you'll never need to do this again. The install is the same for 2001 through 2013 trucks.

 

https://www.alligatorperformance.com/Transmission-Repair-Lines-s/2444.htm

http://www.duramaxforum.com/forum/how-tos-diy-write-ups/87933-how-alligator-tranny-cooler-hoses-kit-install.html

Only seems to have transmission cooler lines for duramax trucks.

gmtech4 Senior Enthusiast

gmtech4

Posted
Posted

wear item ,,,??????????????,,!!!!!are you guys kidding me ,???????

 

insane is the first word that comes to mind ,,,,

 

it doesnt matter what side of a line on a map you're on ,,,

 

its covered ,,,,,wow,ive changed a 1000 cooler lines ,,,under warranty ,,,,

 

this site keeps gettin better every day ,,i swear

8.1HD/ALLISON Senior Enthusiast

8.1HD/ALLISON

Posted
Posted

+1 on that. Find a new dealer. Leaking hoses are not wear items. They are screwing you over.

 

Sent from my LGL86C using Tapatalk

 

 

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