Where is the radiator drain located on a 2007 Chevy 3500 6.6 diesel 4 wheel drive?

On a 2007 Chevy 3500 6.6L Diesel, the radiator drain is typically located at the bottom of the radiator on the passenger side. It usually consists of a plastic petcock or drain valve. To drain the coolant, you can open this valve, but make sure to do so when the engine is cool to avoid burns. Always have a container ready to catch the coolant.