1994 G20 Chevy van; transmission lines leaking.

[VersatileGuy]

It is a 1994 G20 van from Chevy, and apparently these are OEM lines going to a transmission cooler. Fluid is shooting out of the linking connection.

I bought some 5/16 rubber hose line for a temp repair, also rented out a flaring tool to make a bubble flare or something. The whole bottom line looks rough and there is high pressure rubber behind it.

 

[bdcardinal]

The hose you bought, is is oil/transmission fluid rated hose?

 

[VersatileGuy]

The hose you bought, is is oil/transmission fluid rated hose?

https://www.autozone.com/transmissi...ntal-5-16in-transmission-cooler-hose/4947_0_0

It's this from autozone. .

 

[bdcardinal]

Ok you're good. A bunch of RV fires happen when they use non transmission cooler hose and it deteriorates. At least that was what they told us when I was in auto school.

 

[dishdude]

Thread title didn't disappoint.

 

[Kira]

Proficient with several types of line....impressive.
Could you show the "crimps"?

 

[JohnnyJohnson]

Well 6 years ago GM would have fixed that for about $800 ask me how I know.

 

[JMJNet]

Your best solution may be going to a hydraulic shop and bring the current line.
They can make a similar high pressure lines that will work.

 

[D60]

Your best solution may be going to a hydraulic shop and bring the current line.
They can make a similar high pressure lines that will work.

This is not a bad idea. Alligator Performance did this for the GMT900 LMM/Ally. I put the kit on my non-profit's '08 LONG LONG LONG ago.

Those particular lines blew apart at the crimps and GM's fix was literally the definition of insanity by selling you the EXACT same line so it could blow apart again. Fun!

 

[clinebarger]

This is not a bad idea. Alligator Performance did this for the GMT900 LMM/Ally. I put the kit on my non-profit's '08 LONG LONG LONG ago.

Those particular lines blew apart at the crimps and GM's fix was literally the definition of insanity by selling you the EXACT same line so it could blow apart again. Fun!

Allison 1000 cooler/lube pressure is about 4 times higher than a light duty automatic.

 

[VersatileGuy]

Your best solution may be going to a hydraulic shop and bring the current line.
They can make a similar high pressure lines that will work.

Not sure if I want to spend that money. I got this van for 500 dollars and I'm not even sure how long it will last. It has about 185k miles.

 

[D60]

Not sure if I want to spend that money. I got this van for 500 dollars and I'm not even sure how long it will last. It has about 185k miles.

In that case you can try to clamp trans hose on there. There may be tricks to this of which I'm not aware. The one time I saw it attempted on an H3 it leaked badly. In hindsight, it only just occurred to me maybe he used fuel line (I don't know)

I poked around but there seems to be almost no support for the vans. For many trucks (including even an '06 H3) you can still get OEM or aftermarket like Inline Tube, Classic Industries etc. I'm not finding anything for your van, though

 

[VersatileGuy]

In that case you can try to clamp trans hose on there. There may be tricks to this of which I'm not aware. The one time I saw it attempted on an H3 it leaked badly. In hindsight, it only just occurred to me maybe he used fuel line (I don't know)

I poked around but there seems to be almost no support for the vans. For many trucks (including even an '06 H3) you can still get OEM or aftermarket like Inline Tube, Classic Industries etc. I'm not finding anything for your van, though

I was thing of getting some sort of bubble flare on what is left done so that the leak is reduced to a drip( or none at all). Then just ignore whatever is coming out of the crimps(the wet tubing extends well past just the union). But the two lines are very close to each other going to the cooler, so I need to do some bending to get the flare tool in there. Then there's matter that these clamp flare tools can be inconsistent.


I was consider running new NiCopp from the tranny all the way if it's easy to fish out the existing tubing.

 

[VersatileGuy]

Well, the HOA called a tow on me before I could hacksaw away the offending flare fitting.

Don't know, but I now have lost reverse after adding fluid and eliminating the major leak. The other flare drips rather than spews, so it's not the cause.