Because the exact location can vary slightly depending on the specific model and any modifications, it's best to:
1. Consult your owner's manual: This is the most reliable source.
2. Look carefully at the bottom of the radiator: Use a flashlight to illuminate the area. The plug will be at the lowest point of the radiator.
3. Get under the truck: You'll likely need to be under the vehicle to see and reach the drain plug effectively.
Be prepared for some coolant to spill, so have a drain pan ready. The coolant can be hot, so allow the engine to cool down completely before attempting to drain the radiator.