2006 Chevrolet Silverado Drain the Coolant

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Replacing the antifreeze in your truck's radiator is essential to keep the radiator and engine block fully protected. Antifreeze breaks down after a specified amount of time, indicated by the antifreeze manufacturer, and needs to be replaced with new antifreeze. The key to replacing the antifreeze in your truck is knowing from where to drain the antifreeze coolant. You can drain the coolant from your truck's radiator by yourself in just a few minutes.

Tools Used[edit]

5-gallon bucket

Drain the Coolant[edit]

  • Remove the radiator cap from the radiator.
  • Locate the drain cock on the bottom of the radiator. The drain cock will be on the lower left hand side of the radiator.
  • Loosen the drain cock with pliers slightly then put a 5-gallon bucket under the drain cock to catch the coolant.
  • Finish loosening the drain cock and let the coolant flow out into the bucket. When the radiator is completely drained, tighten the drain cock.

Tips & Warnings[edit]

  • Make sure you have a secure grip on the drain cock with the pliers or you could break off the edges of the drain cock.
  • Allow the engine to completely cool before removing the radiator cap or you could get severely burned.