Lower Transmission Line

[edetor]

Have an 07 sierra, 5.3, 4wd. I am adding a tran cooler and when & I removed the lower tran line from the radiator the

large disk attached to the nut also came off. It appeared that tranny fluid & coolant leaked out. Could coolant leak out from this connection and could I have done something wrong when removing the line from the radiator. What type/size fitting should go in the lower radiator to attach the hose to the tranny cooler.

 

thanks

[edetor]

You should have only removed the spring clip and pulled out the line. The fitting you removed holds the trans cooler in the rad tank and seals them together.

 

 

 

thanks, I removed the clip and put the fitting back in, no leakage so far.

[cammiller]

You should have only removed the spring clip and pulled out the line. The fitting you removed holds the trans cooler in the rad tank and seals them together.