Woke up to a puddle of fluid on driveway. Took it to the dealer and they said that it is the trans. cooler lines that need to be replaced. Trying to charge me $1300 and say that the part isn't covered by the factory powertrain warranty. just bought the vehicle from them 3 months ago.

What's the mileage? Check your warranty book to see what is covered by the powertrain warranty. Generally speaking, cooler lines are not part of the powertrain.