Transmission Leaking at Cooler Line - Page 2 - Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum



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Go Back   Chevy TrailBlazer, TrailBlazer SS and GMC Envoy Forum > 2002 - 2009 TrailBlazer/Envoy Tech > 02-09 Vortec 4.2L I-6 Engine and Drivetrain > Transmission Mods

Transmission Mods Performance Transmission Modifications

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  #11  
Old 10-07-2008, 09:44 PM
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K400 K400 is offline
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Cut out the corroded section and add a rubber section. I've done it before on other vehicles with no problems or leaks. Probably cost you $10.00 total.
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  #12  
Old 10-08-2008, 08:09 AM
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Quote:
Originally Posted by agreif View Post
Ugggg, I mean that one line isn't that big of a deal labor wise, but it just adds another $20 to the part cost.
Actually....according to the dealership, they have to drop the front tranny crossmember to replace the front part of the line to the cooler, so it adds quite a bit to the labor....if you let the dealership do it.
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  #13  
Old 10-08-2008, 11:20 AM
agreif agreif is offline
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Quote:
Originally Posted by K400 View Post
Cut out the corroded section and add a rubber section. I've done it before on other vehicles with no problems or leaks. Probably cost you $10.00 total.
Do you have to flare any of the tube ends or do you just go ahead and tighenenit down with worm style clamps? Do you need a special hose for the temperatures that your trans fluid sees?

Quote:
Originally Posted by superman_79065 View Post
Actually....according to the dealership, they have to drop the front tranny crossmember to replace the front part of the line to the cooler....
Ahh, ok, that makes sense, because it was TIGHT in there. At least it's only the crossmember and not the whole tranny (at least that would be the hope).
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  #14  
Old 10-09-2008, 08:02 AM
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Originally Posted by K400 View Post
Cut out the corroded section and add a rubber section. I've done it before on other vehicles with no problems or leaks. Probably cost you $10.00 total.
I agree. One of my lines leaked in the same place. I cut the quick connect joint out and used a hose from NAPA made for transmission fluid. There isn't any real pressure in those lines, just the flow of fluid. It works fine. Keep in mind that if you were to put in a transmission cooler, it would use the same type of rubber lines.
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  #15  
Old 10-09-2008, 10:53 AM
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Beautiful guys. I'll try replacing that quick connect first, and if, when I get the current one off, the tube looks too corroded I'll definitely go that route. Wasn't sure they had a ATF specific line. Thanks again guys.

Andrew
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  #16  
Old 10-09-2008, 11:05 AM
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My issue started as a pinhole where I believe the exhaust BURNED through the line. I was going to just cut the line and put in a compression union. But, I thought "no, get it done right, just replace the line"....400 dollars later, I wished I had just used the compression fitting.

Although, in your case, it looks like the corrossion is more widespread......but cutting out the corrossion and replacing with hose should work just fine....
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  #17  
Old 10-09-2008, 11:53 AM
agreif agreif is offline
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would I need to use a compression fitting like what is shown above (anything special that needs to be done to the hose in that case) or can I just slip a hose on there with some clamps?
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  #18  
Old 10-09-2008, 12:17 PM
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I have seen it done both ways. I personally think the hose clamp method looks a little sloppy. If you search some of the threads about tranny coolers, you can seen some of the various methods.
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  #19  
Old 10-09-2008, 12:25 PM
agreif agreif is offline
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Cool, thanks. Looks like that's my only way to go anyway, since that quick connector is a non servicable part. Have to the whole line to get that connector.
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  #20  
Old 12-22-2008, 01:37 AM
haze274 haze274 is offline
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Hello please tell me the size for the metal line is it 3/8 thats what I understand that it is
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