Sorry about the response, I have no idea what happened so I will try to be detailed. Thank you for the help in advance!
2012 cruze 2LT 84k miles. 6t40 auto transmission.
Recently my lower transmission cooler line started leaking at the crimp. They are the lines that are towards the front of the car that run from the radiator to I think the transmission. I disconnected the lower line that runs to the bottom of the radiator (looking at the car into the engine it is on the right side of the radiator, had to take tire off to disconnect it. They are twisted kind of weird at one point before they run down to the radiator). When I disconnected it all my coolant drained out of the radiator until my reservoir was empty. I pulled the line up and it was indeed my leaking cooler line. I put the line down and what I think was ATF ran out and caused my drain pan to turn into like a soup. I fixed the line and reconnected it then filled my coolant again. 1k miles later there is no automatic in the coolant and the transmission shifts fine. Why did coolant come out? There's no leak that I can see? Only other issue I've had was the burning oil smell and a new valve cover and oil cap fixed that. I drained/filled my transmission and it was pure automatic.
Are those lines actually transmission cooler lines? If you open the hood and look down they are in the front of the engine. I'm pretty concerned.