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Old 04-04-2009, 06:30 PM   #1 (permalink)
bigrig73
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Allison Transmission Lines

does anyone have a solution to the leaking lines. seems like gm doesn't give a crap about their terrible design. is there a better way to fix the problem of the leaky lines for good?
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Old 04-04-2009, 06:47 PM   #2 (permalink)
Vailman
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Good Luck I was at the dealer and its funny how they said " Oh we see this alot" I was like WTF then do something. Sorry sir its not a recall item yet!
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Old 04-04-2009, 07:31 PM   #3 (permalink)
bigrig73
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i had my truck done and it seems to be holding, but my dad had his replaced, and now they are starting to leak again. it's a real piss off when you pay damn near $70,000.00 for a truck and they can't even fix a continuous problem like this. it has been going on since the start of the dmax, i am sure.

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Old 04-04-2009, 07:34 PM   #4 (permalink)
Chris_S
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If I remember correctly Mike from Inglewood Transmissions makes an aftermarket tranny cooler line that address the crimp on issue and leaks. He is a Supporting Vendor here.
This thread should probably be moved to the Tranny Section.
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Old 04-06-2009, 04:25 PM   #5 (permalink)
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took mine off and took it to a hose shop... they set me up with some hydraulic fittings (compression type) and hose. Says the fittings are suppose to hold 1000+psi... Not that the trans is that high but whatever..

about 250bucks, won't leak again!
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Old 04-06-2009, 04:37 PM   #6 (permalink)
Jeremy James Andres
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Russel trans cooler lines of fixes and part numbers.
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Old 04-06-2009, 05:19 PM   #7 (permalink)
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Mine have been replaced 3 times in 62,000 miles.
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Old 04-06-2009, 09:25 PM   #8 (permalink)
LtEng5
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I'll be getting some AN fittings and lines come summer. A few other guys here have done the same
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Old 04-06-2009, 11:56 PM   #9 (permalink)
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If it were me I would pull the lines off, cut the crimps off and reveal the barbed section of the hard line that the hose slides up onto. Go to Oreillys or Napa (Napa seems to have intelligent employees for the most part) and have them redo the lines with hydraulic hose. You could also just use some good heavy clampable oil cooler hose and regular hose clamps. The hose GM uses is about the consistancy of a cheap garden hose. Its a common enough problem they threw a bulletin out about it but said nothing other then to replace as necessary. Honestly I get tired of doing them. I got a tranny fluid facial at 8:30 AM last week and I didn't really like it all that much.
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Old 04-08-2009, 06:58 PM   #10 (permalink)
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Check out my garage. SS braided lines...with the nuts soldered on to the steel lines...yes they are steel...but aluminized for anti-corrosion reasons and I personally tested my new lines at the dealer with a rare earth magnet just to make sure.

Getting them re-done time and time again out of warranty is/was in my opinion just pure Bull$hit. These lines have been an issue for over 10 yrs...why give the dealer the business of just replacing cheap chinese crimped lines with cheap chinese crimped lines over and over again.

Yea, it cost me a bit..over $600 CAD...but it cost near that to get them replaced too.
1 less issue to have to deal with and no Transynd on the driveway...pricieless.!

1 thing to keep in mind, one of the lines is very very close to the exhaust tail pipe. If you have gone to a larger size (4"), like I had done previously, you may well find it near impossible to remove the originals and re-install the new ones...I just bent (very carefully) the new line a bit to sneak it by.

It took about 2 hours with a buddy to access the old lines, remove-cut the rubber, and replace the with the new ones which even though they were two solid pcs with a flexible hose that one could wrench on, it wasn't all that easy .... i can't imagine how they do it with one pce hoses at the dealer...must be a beotch..!

cheers...re-do your lines, you will not regret it or the expense..what ever the cost.

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