2005 chevy tahoe

[MassHoe04]

I used wire snips like these:



To cut the black bands that retain the snap-on piece inside the connector.
I snipped where the yellow lines were and snapped out the bit marked with the red X, did the same on the opposite side.

Black part of the T comes right off. Then, you can slip the white snap-on piece off of the heater core tube.



Easy-peasy.

I was lucky to be one town over and my son could bring those basic tools to me and get me a ride to pick up the new T connector and coolant at NAPA down the street.

 

[2006Tahoe2WD]

Yup. Tees can weep just enough to stink the place up but not lower the overflow tank. But given time they will leak bad and you will find out the hard way while miles away from home and steam pouring out from under your hood. They are a total blast to replace too!

This is why I replaced my Tees with OEM parts before this happened.