Cooling System Draining and Filling (Static Fill)

Draining and Filling Cooling System (LS2 Static Fill)

Tools Required

J 38185 Hose Clamp Pliers

Draining Procedure

1. Park the vehicle on a level surface.
2. Remove the surge tank cap.
3. Raise and support the vehicle. Refer to Vehicle Lifting.
4. Remove the air deflector.
5. Place a drain pan under the lower radiator hose connection at the bottom of the radiator.
6. Using J 38185, slide the hose clamp back on the hose.
7. Slowly remove the lower radiator hose and drain the coolant into the drain pan.
8. Inspect the engine coolant for the following conditions:

* Discolored appearance-Follow the flush procedure. Refer to Flushing.
* Normal in appearance-Follow the filling procedure.

Filling Procedure

1. Install the lower radiator hose.
2. Using J 38185, slide the clamp into the original position.
3. Lower the vehicle.
4. Slowly add a mixture of 50/50 DEX-COOL antifreeze and deionized water to the cooling system. Refer to Capacities - Approximate Fluid.
5. Fill the surge tank to the FULL COLD level.
6. Install the surge tank cap.
7. Idle the engine for 2 minutes and occasionally raise the throttle to 3,000-3,500 RPM.
8. Shut off the engine and allow the engine to cool.
9. Repeat the steps 1-9.
10. Idle the engine for 2 minutes and occasionally raise the throttle to 3,000-3,500 RPM.
11. Inspect the surge tank for consistent flow.
12. If no flow occurs through the surge tank, repeat steps 1-9.
13. Install the air deflector.
14. Allow the engine to cool.
15. Remove the surge tank cap and fill to the FULL COLD level.