Hummer H3. Manual — part 1102

Fig. 5: Identifying Vacuum Gage Assembly
Courtesy of GENERAL MOTORS CORP.

3. Attach the vacuum gage assembly to the Vac-N-Fill cap.

2007 Hummer H3

2007 ENGINE Engine Cooling - H3

Fig. 6: Identifying Fill Hose
Courtesy of GENERAL MOTORS CORP.

4. Attach the fill hose to the barb fitting on the vacuum gage assembly.

Ensure that the valve is closed.

2007 Hummer H3

2007 ENGINE Engine Cooling - H3

Fig. 7: View Of Graduated Reservoir & Hose
Courtesy of GENERAL MOTORS CORP.

5. Pour the coolant mixture into the graduated reservoir.

6. Place the fill hose in the graduated reservoir.

IMPORTANT: Use a 50/50 mixture of DEX-COOL antifreeze and clean,

drinkable water. Always use more coolant than necessary.
This will eliminate air from being drawn into the cooling
system.

IMPORTANT: Prior to installing the vacuum tank onto the graduated

reservoir, ensure that the drain valve located on the bottom

2007 Hummer H3

2007 ENGINE Engine Cooling - H3

7. Install the vacuum tank on the graduated reservoir with the fill hose routed through the cut-

out area in the vacuum tank.

Fig. 8: Identifying Venturi Assembly
Courtesy of GENERAL MOTORS CORP.

8. Attach the venture assembly to the vacuum tank.

of the tank is closed.

2007 Hummer H3

2007 ENGINE Engine Cooling - H3