Transmission cooling pressure line?

[shadow83]

I want to do a tranny fluid change but can't tell which line is the pressure from the tranny, is it the driver or passenger?

[Stewi]

slide both hoses off, have someone start the car while you watch under the hood, see which tube on the trans fluid pushes out of, thats the pressure line.

[SPD_FRK]

The line that attaches to driver side of the radiator is the pressurized line IRRC

[pinoyesv6]

i connect both sides of the hose to my drain pan regardless because the side that without the pressure still dribbles fluid.

[RedGalant2k1]

Both sides are pressurized, it just matters which is the 'flow' side. Are you just draining and filling, or doing an actual transmission fluid flush?