Where is the radiator drain valve located on a 2006 buick rendezvous?

The radiator drain valve on a 2006 Buick Rendezvous is located on the passenger side of the vehicle. To access it, you will need to remove the front passenger wheel. Once the wheel is removed, you can see the drain valve located at the bottom of the radiator. It is usually a small plastic or brass valve with a red or blue cap.