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Home >> Chevrolet >> 2006 >> Silverado 1500 HD, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 1138 (Engine Cooling System) >> Repair Instructions >> Cooling System Draining and Filling (Static Fill) >> Draining Procedure >> Fill Procedure

Fill Procedure

WARNING: This page is about a different car, the 2008 Cadillac CTS. However, it is still accessible from the selected car via links, so may be relevant.
    NOTE: The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition, causing engine damage.
  1. Close the radiator drain cock.
  2. Install the air deflector. Refer to Front Air Deflector Replacement .
  3. Lower the vehicle.
  4. Slowly add a mixture of 50/50 DEX-COOL antifreeze and clean drinkable water to the cooling system through the top of the surge tank opening. Refer to Approximate Fluid Capacities .
  5. Slowly fill the cooling system until the coolant stabilizes at 25 mm (1 inch) above the FULL COLD mark on the surge tank.
  6. Install the surge tank cap.
  7. Start the engine.
  8. Run the engine at 2,000-2,500 RPM until the engine reaches normal operating temperature.
  9. Allow the engine to idle for 3 minutes.
  10. Shut the engine OFF.
  11. Allow the engine to cool.
  12. Add or remove coolant as necessary from the surge tank until the level is stabilized at the FULL COLD mark.
  13. Inspect the cooling system for leaks.
  14. Using J 26568  inspect the concentration of the engine coolant. See Special Tools .
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