1. Locate the drain cock: The drain cock for the coolant is located on the bottom of the radiator, on the passenger side of the vehicle. It is a small, plastic valve with a red or blue cap.
2. Prepare a drain pan: Place a drain pan under the radiator to catch the coolant as it drains.
3. Open the drain cock: Use a wrench to loosen the drain cock and allow the coolant to drain into the pan. Be careful not to spill any coolant on the ground.
4. Close the drain cock: Once all of the coolant has drained out, close the drain cock tightly.
5. Reinstall the drain plug: Reinstall the drain plug into the radiator.
Note: If you are unable to locate the drain cock, or if you have any other questions about draining the coolant from your 2000 Tundra, please consult your vehicle's owner's manual or a qualified mechanic.
