My 2006 cadillac cts radiator filled up with transmission fluid how do i fix it

If water got into the transmission, there is no telling how much damage it causeed to the pumps, torque convertor and/or clutches. I am sorry to say you are probably in for a transmission rebuild or replacement.

Edgar: You have no dipstick. Here are the instructions: http://www.carcarekiosk.com/video/2006_Cadillac_CTS_3.6L_V6/transmission_fluid/add_level

https://www.youtube.com/watch?v=UmSU_9ElEzo

My 2009 CTS4 should be the same as your 2008 CTS. There is no dipstick tube to check or fill the transmission. The check plug is in the bottom of the pan. It loos like a drain plug, but it is not. The fill plug is on the passenger side of the transmission, just above the front of the oil pan. It is a plastic and rubber plug that is pulled straight up.

You'll probably be better off having it checked and filled at a dealer or trans shop.

Drop the transmission oil pan, replace filter, reinstall pan. Remove inspection cover to view torque converter. Turn flywheel over by hand till drain plug in converter is at bottom. Remove plug and drain. Replace plug and fill trans. with new fluid.

normally the oil lines to the radiator are screwed in as there is pressure in these lines from the pump in the transmission. If the flexible hoses are only on tail with a hose clip to hold it on I would change them to screw in type to cater for the pressure of the transmission pump. Have a pressure test done on the transmission to ensure that the pressure is not too high.

Yes flush and refill.

GM transmissions are sealed so there is no filler hole
take it to an auto transmission specialist and have them check the fluid level and pump in more oil if needed
while you are there have them fix the leak

Do nothing if everything seems OK. Drain and refill, but never flush, you will stir up gunk in the pan, if you have hard or sluggish shifts

tod34 is correct. The "fill" area of this transmission is located on the transmission itself. It is a fluid leveling plug located low on the main case toward the back of the trans. You must pump the fluid in through that hole. If you are on level ground and the transmission is properly warmed, you should fill the transmission until the fluid level is flush with the bottom of the hole (starts spilling out)

I too have the 2004 CTS.
Just today, my dealership checked my transmission fluid level because I have gear noise.

There is NO dipstick!

The car is put up on the hoist with motor running and transmission in neutral.
There is a fill / level check plug located on drivers side of transmission through which the level is checked.

koram