How to Change Antifreeze on a 2003 Chevrolet 4.8L Engine

104 23

    Draining the Antifreeze

    • 1). Disconnect the ground cable from the negative battery terminal. Loosen the retaining bolt using a wrench. Then pull the clamp off the terminal

    • 2). Unscrew the radiator cap from the radiator. Press down on the cap with your hand and rotate it counterclockwise. Then lift the cap off the radiator.

    • 3). Locate the petcock valve on the lower right corner of the radiator. Place a waste oil collection pan underneath it.

    • 4). Open the petcock valve by rotating it counterclockwise with a needle nose pliers. Allow the radiator to drain completely.

    • 5). Close the petcock by rotating it counterclockwise with a needle nose pliers.

    Refilling the Antifreeze

    • 1). Fill the radiator with a 50/50 mix of antifreeze and water.

    • 2). Reconnect the ground cable to the negative battery terminal. Slide the clamp over the terminal. Then tighten the retaining bolt with a wrench.

    • 3). Run the engine with the radiator cap off the radiator for three to five minutes. This will bleed air from the cooling system.

    • 4). Add more coolant to the radiator if necessary. You should fill the radiator to just below the radiator cap.

    • 5). Screw the radiator cap onto the radiator.

Source...
Subscribe to our newsletter
Sign up here to get the latest news, updates and special offers delivered directly to your inbox.
You can unsubscribe at any time
You might also like on "Cars & Vehicles"

Leave A Reply

Your email address will not be published.