Where is the freeze plug in 2004 cadillac cts?

SOURCE: 2004 cts cadillac trunk will not open with remote

Check fuse.. Test for power to trunk release solenoid. When door button, or remote trunk release button is pushed. If there is power ( use a 12 volt test light ) most probably faulty release . Hope this helps

SOURCE: cadillac cts cranks but won't start

My 2003 CTS would not start on the first, second or third try after filling the gas tank. Finally after several months of this occuring every two weeks a check engine light came on. It was the evac purge valve. Tom

SOURCE: 2004 CTS Cadillac front passenger turn signal bulb is out.

Actually no you don't. Crank your steering wheel all the way to the right so yo have the maxumum clearance for your hands and arms in the front of the wheel well. Remove the plastic clips that hold the wheel well splash guard and pull it back enough to allow access to the interior of your bumper.
Replace bulbs as needed.
Yes, a jack is nice and makes it a touch easier to access, but I did this in an AutoZone parking lot during a cross country road trip.
5 mins tops to complete.

SOURCE: car leaks coolant but does not overheat 2004

water pump weep hole leaking replace pump

SOURCE: Need to add transmission fluid in Cadillac CTS

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)