Transmission cooler line

davester · March 4, 2020

7 hours ago, swathdiver said:

Lisle Jiffy-Tite 22930.

Um, I don't think that tool helps at all with the transmission line connectors. That tool is for fuel lines (if it's the right size) or perhaps A/C lines.

The Transmission and oil cooler lines are push in, then there is a separate clip that goes the side of the connector to hold the line in the connector, then a plastic cover goes over the connector that prevents the clip from coming out.

Note, this is w.r.t. the 4l80e. Perhaps the 4l60e uses different connectors...

Edited March 4, 2020 by davester

swathdiver · March 4, 2020

32 minutes ago, davester said:

Um, I don't think that tool helps at all with the transmission line connectors. That tool is for fuel lines (if it's the right size) or perhaps A/C lines.

The Transmission and oil cooler lines are push in, then there is a separate clip that goes the side of the connector to hold the line in the connector, then a plastic cover goes over the connector that prevents the clip from coming out.

Note, this is w.r.t. the 4l80e. Perhaps the 4l60e uses different connectors...

I used them today on mine, worked perfect! The 22930 for the transmission lines and the the 22940 for the engine oil cooler lines. These are for the lines that go into the radiator. They do indeed make other sizes for the fuel and AC lines, haven't bought them yet. Oh, and even for the heater core lines too.

davester · March 4, 2020

Could you post a pick of your fittings? I just double checked in the full-service manual for '04, and it shows the same fittings for the 4l60e as for the 4l80e, where you should remove and replace the clip that holds the line in, not just spread it with that tool...

swathdiver · March 4, 2020

1 hour ago, davester said:

Could you post a pick of your fittings? I just double checked in the full-service manual for '04, and it shows the same fittings for the 4l60e as for the 4l80e, where you should remove and replace the clip that holds the line in, not just spread it with that tool...

You know Dave, I just realized that we're dealing with an 800 and I have a 900. Are they different? If so, my apologies!

davester · March 4, 2020

Maybe, I don't know what kind of connectors GMT900's use.

swathdiver · March 4, 2020

3 hours ago, davester said:

Maybe, I don't know what kind of connectors GMT900's use.

Well, they look exactly as you describe them.

davester · March 4, 2020

If it's the same fitting, then I don't see the point of your special tool, as it's easy enough to remove the clip and then the line can just be pulled out. And the clips supposed to be replaced anyway...

swathdiver · March 5, 2020

2 hours ago, davester said:

If it's the same fitting, then I don't see the point of your special tool, as it's easy enough to remove the clip and then the line can just be pulled out. And the clips supposed to be replaced anyway...

Because they don't fly away when using a pick to remove them. And it makes sense that they would want them replaced after using that method to remove them.

Look, these are similar to GM specific J-tools for removing the lines, not something conjured up in our minds. Works fast too once one becomes familiar with their operation.

J-41623-B
DT-47731

Edited March 5, 2020 by swathdiver

davester · March 5, 2020

Well, you are free to do whatever you want, but for me, I'd rather follow GM's guidance on replacing the clips vs saving the few bucks and reusing them and taking on the added risk of them failing from being stretched out and the line popping out, at that becomes a much more expensive repair.

swathdiver · March 5, 2020

1 hour ago, davester said:

Well, you are free to do whatever you want, but for me, I'd rather follow GM's guidance on replacing the clips vs saving the few bucks and reusing them and taking on the added risk of them failing from being stretched out and the line popping out, at that becomes a much more expensive repair.

Well, that's the thing Dave, I am following the shop manual. I just reviewed one of my copies (AllDataDIY) and it says nothing about replacing the clips and shows the use of the tools I showed you. That's why I bought them. Same procedure for all of the transmissions used on the GMT900s.

davester · March 5, 2020

Must have changed from the GMT800s then.

PearlWhiteGT · March 30, 2022

I know this thread is a little older but looking at replacing the lines on my 2001 Silverado 1500 Z71 and was looking to purchase the Lisle 22930 tool. I thought that tool would work on all the connections for the transmission, radiator and cooler. If this is wrong please let me know so I can purchase the 22940 as well.

txab · March 30, 2022

If your fitting is the same, you don't need a tool. Just remove the clip, CAREFULLY, the pipe can be removed. Then put everything back together. You can re-install clip and then push the pipe in or install afterwards. The clips can be purchased at parts stores if you lose one

Edited March 30, 2022 by txab

PearlWhiteGT · March 30, 2022

I know the tool is not needed but seems like it would be easier to use the tool in the hard to reach places rather than trying to pick off the clips.

Brenden Burnham · March 30, 2022

1 hour ago, PearlWhiteGT said:

I know the tool is not needed but seems like it would be easier to use the tool in the hard to reach places rather than trying to pick off the clips.

Think the point is it is personal preference. Can be done either way. Pick your poison.