Sorry, I don't know what happened, but the cooling lines do not need to be removed in order to service the tranny fluid, including removal of the pan.

Can you see where all the coolant came from?

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record