theres a piece of plasitic, i would say midway down the line, pinch the two tabs together and simply slide it off.
if you are asking about the cooling lines for the transmission that connect to the radiator, its easy. first disconnect the lines from the radiator (2 lines, usually on the bottom opposite the radiator outlet) then disconnect the lines from the transmission. remove the brackets holding them on, then remove.
Look on bottom or rear of radiator
From the transmission? No? But antifreeze & transmission fluid can mix. Your transmission uses a small portion of the radiator as a transmission cooler, normally at the very bottom or side. In very rare instances, this cooler can develop a leak and allow transmission fluid and antifreeze to mix together. The only fix is to replace the radiator.
Should be a plug either at the bottom or rear of radiator
Look at the bottom or rear or radiator or disconnect the lower radiator hose
if there is no drain plug on radiator, just disconnect bottom rdiator hose at radiator
Even easier way is to remove the cap on top and loosen the drain plug on the bottom. --- easiest way to drain radiator, is to disconnect the bottom radiator hose from the radiator
There should be a drain at the bottom corner of the radiator on the side facing the engine.
Upper is hose connected to top of radiator, lower is hose connected to bottom of radiator.
Connected to the bottom of the radiator you will see 2 lines. One is the inlet and one is the outlet. The cooler line is the return (outlet) line.
Vehicles with an automatic transmission may have lines that carry transmission fluid from the transmission to a separate tank on the bottom of the radiator.
It comes out of the bottom drivers side of the radiator and goes to the water pump.