In the directions that I have for flushing the trans fluid, I'm instructed to
drain the pan, add x quarts of fluid, and then attach a length of clear rubber hose to the line which returns the fluid from the cooler. From there, I'm supposed to start the truck and then shift thuy the gears to flush additional fluid out.

If anyone is familiar with this process, can someone give me a reference to where this return line can be found? Is it a steel line going into the trans, or is it a hose?

Any assistance would be appreciated.

 

Is there some reason you don't want to do it easier by draining the pan, changing the filter and draining the TC?

 

Mike, Look above in the Articles/ Specifications section, scroll down in the articles until you come to the section ""Changing transmissiion fluid in the E40D and 4R100 article. All info there. Carroll

 

Someone said, not me..... That the TC has no drainplug. I'm not sure if this is just the later trucks or all of them. I just don't see why the TC would NOT have a drainplug?

Does someone know for sure?

 

My 01 does have a drain plug. Stock that is. Not sure what TC you have.

 

According to the instructions referenced above (Articles/Specs), my 2002 truck has no drain plug on the TC, which leads me back to the clear tubing question, which is option 2 if you don't have the drain plug.

Exactly where is the return line from the cooler, and where does it connect to the trans?

 

Follow the lines and you will know. It goes from trans to radiator to cooler and back to trans

 

Just check and see if it does anyways. Mark one spot of the TC. Rotate the TC over 1 rev and see if you see your mark again.

 

Look at the buid date of your truck, if it is after august of 2001 odds are you do not have a drain plug on your T/C.

 

Offbeat question. I have a PI TC. I forgot to check but does anyone know if it has a drain plug?