Where does my coolant drain out at on 2007 buick lucerne 4.6

Hi this is Dusty, I'm one of the auto experts on RepairPal's Car Genius team! Hey there! The coolant in your 2007 Buick Lucerne typically drains out from the bottom of the radiator. First and foremost, make sure to do this when the engine is cool to avoid any burns. Some vehicles are equipped with a drain valve, but the process for your vehicle is to just loosen the clamp on the lower radiator hose, and carefully separate the hose from the radiator to allow the coolant to drain. Additionally, be sure to catch the coolant in a suitable container and dispose of it properly, as coolant can be harmful to the environment. If you have any other questions or would like to help with finding a RepairPal Certified shop in your area to take care of this, give us a call! 877-913-1554