How do I go about changing out the transmission fluid in a 2006 Buick Rainier AWD. I'm used to seeing a threaded fitting on the radiator to undo and change it that way. Not seeing that here. Thanks for the help.

Drop the pan.

drop the pan on the tranny, dan has a write up on here about doing it on his bonneville. it wont be exactly the same but same concept.

moved to it'* proper Mechanical Section. General Chat is for items that affect all platforms and "General Chat". It really helps the GearHeads, others with ownership of same/similar Models, the Forum regarding search bots, and our own internal search engine when we keep things in order. Thanx.