Trans cooler line part # 4l60

[jcurtis]

I found the hose from the transmission to the Trans cooler and I'm able to reuse the line from the cooler to the radiator, but I can NOT find the radiator to Trans line....

(Pictured, the one without red tape)

Also, which one is upper and which is lower?

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[xXxPARAGONxXx]

GM does not sell the all-metal (no rubber hose) radiator cooler line. You will have to buy straight line/pipe and do everything yourself, including bending and flaring it.

 

[Nad_Yvalhosert]

Bottom (outlet) on transmission goes to bottom of radiator.
Top of radiator goes to the auxiliary cooler
Lastly, the cooler goes to top (inlet) on transmission.

The hot transmission fluid goes into the bottom of the radiator, and pressure pushes it to the top, so it doesn't aerate.
Rockauto should have all 3 lines in their catalog.


Edit: they don't...


I"d try to look them up for you but you neglected to list your year, model, and engine/tranny ID.

In your pic, the line with the Jesus clip is the aux cooler, and the threaded fitting goes into the radiator. If you looked at the radiator, you could've figured that out for yourself...

 

[jcurtis]

Bottom (outlet) on transmission goes to bottom of radiator.
Top off radiator goes to the auxiliary cooler
Lastly, the cooler goes to top (inlet) on transmission.

The hot transmission fluid goes into the bottom of the radiator, and pressure pushes it to the top, so it doesn't aerate.
Rockauto should have all 3 lines in their catalog.

I"d try to look them up for you but you neglected to list your year, model, and engine/tranny ID.

In your pic, the line with the Jesus clip is the aux cooler, and the threaded fitting goes into the radiator. If you looked at the radiator, you could've figured that out for yourself...

Yeah, I used my eyes to figure that out. I meant to say top/bottom trans.

 

[L31MaxExpress]

Bottom (outlet) on transmission goes to bottom of radiator.
Top off radiator goes to the auxiliary cooler
Lastly, the cooler goes to top (inlet) on transmission.

The hot transmission fluid goes into the bottom of the radiator, and pressure pushes it to the top, so it doesn't aerate.
Rockauto should have all 3 lines in their catalog.

I"d try to look them up for you but you neglected to list your year, model, and engine/tranny ID.

In your pic, the line with the Jesus clip is the aux cooler, and the threaded fitting goes into the radiator. If you looked at the radiator, you could've figured that out for yourself...

Both of my GMT400 era GMs flow from top to bottom of the radiator cooler from the factory. 99 Tahoe and 97 Van. The G20 vans I have also flow down. I have yet to see a GM cooler flow up from the factory. They have all had the inlet at the top and outlet on the bottom. The engine oil cooler is also the same way. Oil goes in at the top and comes out of the bottom.

 

[jcurtis]

95 k1500 5.7

 

[Nad_Yvalhosert]

Both of my GMT400 era GMs flow from top to bottom of the radiator cooler from the factory. 99 Tahoe and 97 Van. The G20 vans I have also flow down. I have yet to see a GM cooler flow up from the factory. They have all had the inlet at the top and outlet on the bottom. The engine oil cooler is also the same way. Oil goes in at the top and comes out of the bottom.

 

[Nad_Yvalhosert]

Both of my GMT400 era GMs flow from top to bottom of the radiator cooler from the factory. 99 Tahoe and 97 Van. The G20 vans I have also flow down. I have yet to see a GM cooler flow up from the factory. They have all had the inlet at the top and outlet on the bottom. The engine oil cooler is also the same way. Oil goes in at the top and comes out of the bottom.

This how my Yukon is run from the factory. So unless Arlington, TX does something different...

 

[L31MaxExpress]

This how my Yukon is run from the factory. So unless Arlington, TX does something different...

My 99 did have the HD cooling setup with the factory pusher electric fan.

 

[Kens1990K2500]

GM does not sell the all-metal (no rubber hose) radiator cooler line. You will have to buy straight line/pipe and do everything yourself, including bending and flaring it.

Or, you can buy pre-bent, stainless steel lines, from Inline Tube.