Engine Cooling System: Maintenance Chevrolet HHR I

Draining Procedure

1. Remove the coolant pressure cap.
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-299584-S01107113332008092400000) .
3. Place a drain pan under the right side lower radiator mount.
4. Open the radiator drain cock.
5. Drain the cooling system.
6. If a complete block drain is required, place a drain pan under the water pump drain.
7. Remove the water pump drain plug.
8. Drain the cooling system.
9. Inspect the appearance of the engine coolant for discoloration: Discolored-Follow the flush procedure. Refer to «Coolant System Flushing»(ref-299633-S38396161852008092400000) . Normal in appearance-Follow the filling procedure.

Cooling System Draining and Filling (GE 47716 Fill)

Special Tools

1. J 26568 Coolant and Battery Fluid Tester
2. J 42401 Radiator Pressure Adapter. See «Special Tools»(ref-299633-S02913904972008092400000) .
3. GE-47716 Vac N Fill Coolant Refill Tool

1. Remove the pressure cap.
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-299584-S01107113332008092400000) .
3. Place a drain pan under the right side lower radiator mount.
4. Open the radiator drain cock.
5. Drain the cooling system.
6. If a complete block drain is required, place a drain pan under the water pump drain.
7. Remove the water pump drain plug (1).
8. Drain the cooling system.
9. Inspect the appearance of the engine coolant for discoloration: Discolored-Follow the flush procedure. Refer to «Coolant System Flushing»(ref-299633-S38396161852008092400000) . Normal in appearance-Follow the filling procedure.

Vac-N-Fill Procedure

1. Close the radiator drain cock by hand.
2. Install J-42401-2 into the surge tank fill neck.
3. Install J-42401-3 to the surge tank fill neck.
4. Attach the Vac N Fill cap to the J-42401-3.
5. Attach the vacuum gage assembly to the Vac N Fill cap.
6. Attach the fill hose to the barb fitting on the vacuum gage assembly. Ensure that the valve is closed.
7. Pour the coolant mixture into the graduated reservoir.
8. Place the fill hose in the graduated reservoir.
9. Install the vacuum tank on the graduated reservoir with the fill hose routed through the cut-out area in the vacuum tank.
10. Attach the venturi assembly to the vacuum tank.
11. Attach a shop air hose to the venturi assembly. Ensure the valve on the venturi assembly is closed.
12. Attach the vacuum hose to the vacuum gage assembly and the vacuum tank.
13. Open the valve on the venturi assembly. The vacuum gage will begin to rise and a hissing noise will be present.
14. Continue to draw vacuum until the needle stops rising. This should be 610-660 mm Hg (24-26 in Hg). Cooling hoses may start to collapse. This is normal due to vacuum draw.
15. To aid in the fill process, position the graduated reservoir above the coolant fill port.
16. Slowly open the valve on the vacuum gage assembly. When the coolant reaches the top of the fill hose, close the valve. This will eliminate air from the fill hose.
17. Close the valve on the venturi assembly.
18. If there is a suspected leak in the cooling system, allow the system to stabilize under vacuum and monitor for vacuum loss. If vacuum loss is observed, refer to «Loss of Coolant»(ref-299633-S37390994882008092400000) .
19. Open the valve on the vacuum gage assembly. The vacuum gage will drop as coolant is drawn into the system.
20. Once the vacuum gage reaches zero, close the valve on the vacuum gauge assembly and repeat steps 10-16.
21. Detach the Vac N Fill cap from the vehicle's coolant fill port.
22. Add coolant to the system as necessary.
23. Inspect the concentration of the coolant mixture using J 26568 .
24. Detach the vacuum hose from the vacuum gage assembly.
25. Attach the extraction hose to the vacuum hose.
26. Open the valve on the venturi assembly to start a vacuum draw.
27. Use the extraction hose to draw out coolant to the proper level.
28. The vacuum tank has a drain valve on the bottom of the tank. Open the valve to drain coolant from the vacuum tank into a suitable container for disposal.

1. Remove the surge tank cap (1).
2. Raise and support the vehicle. Refer to «Lifting and Jacking the Vehicle»(ref-299584-S01107113332008092400000) .
3. Place a drain pan under the right side lower radiator mount.
4. Open the radiator drain cock.
5. Drain the cooling system.
6. If a complete block drain is required, place a pan under the water pump drain.
7. Remove the water pump drain plug (1).
8. Drain the cooling system.
9. Inspect the appearance of the engine coolant for discoloration: Discolored-Follow the flush procedure. Refer to «Coolant System Flushing»(ref-299633-S38396161852008092400000) . Normal in appearance-Follow the filling procedure.

Coolant System Flushing

1. Block the drive wheels.
2. Place the transmission in park (P) or neutral (N).
3. Engage the park brake.
4. Run the engine until the thermostat opens.
5. Stop the engine.
6. Follow the drain and fill procedure using only clean drinkable water. Repeat the procedure if necessary, until the fluid is nearly colorless. Refer to «Cooling System Draining and Filling (Static Fill-LE5, L61)»(ref-299633-S28287530232008092400000) , «Cooling System Draining and Filling (GE 47716 Fill)»(ref-299633-S22326301682008092400000) or «Cooling System Draining and Filling (Static Fill-LNF)»(ref-299633-S38581770322008092400000) .
7. Fill the coolant reservoir to the FULL COLD mark.
8. Fill the cooling system. Refer to «Cooling System Draining and Filling (Static Fill-LE5, L61)»(ref-299633-S28287530232008092400000) , «Cooling System Draining and Filling (GE 47716 Fill)»(ref-299633-S22326301682008092400000) or «Cooling System Draining and Filling (Static Fill-LNF)»(ref-299633-S38581770322008092400000) .