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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 463 (Engine Cooling System) >> Repair Instructions >> Cooling System Draining and Filling (Static Fill) >> Filling Procedure

Filling Procedure

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    CAUTION:

    The procedure below must be followed. Improper coolant level could result in a low or high coolant level condition, causing engine damage.

  1. Install the lower radiator hose and/or drain cock to the radiator.
  2. Using the J 38185  hose clamp pliers, reposition the lower radiator hose clamp.
    3. CAUTION:

    Refer to Fastener Caution .

  3. If the left and right engine block coolant drain plugs were removed, perform the following:
    1. Apply pipe sealer to the drain plugs.
    2. Install the drain plugs.

      Tighten 

      Tighten the drain plugs to 60 (44 lb ft).

  4. Install the engine block coolant heater, if equipped. Refer to Coolant Heater Replacement (With LY2, LMG, LY5, LY6 or LFA) , Coolant Heater Replacement (With LC9, L76, or L92) .
  5. Lower the vehicle.
    6. NOTE:

    Use a 50/50 mixture of DEX-COOL antifreeze and clean, drinkable water.

  6. Slowly fill the cooling system with a 50/50 coolant mixture. Refer to Approximate Fluid Capacities .
  7. Install the coolant pressure cap.
  8. Start the engine.
  9. Run the engine at 2, 000-2, 500 RPM until the engine reaches normal operating temperature.

    Engine should reach an operating temperature of 90°C (194°F) and the upper radiator hose should be HOT.

  10. Allow the engine to idle for 3 minutes.
  11. Shut the engine OFF.
  12. Allow the engine to cool.
  13. Top off the coolant as necessary.
  14. Inspect the concentration of the engine coolant using the J 26568  coolant and battery tester.
  15. Rinse away any excess coolant from the engine and the engine compartment.
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