Hummer H2. Manual - part 1771

7. Wipe the indicator with a clean cloth.  

8. Install the oil level indicator.  

9. Remove the oil level indicator in order to check the level.  

10. Add oil if necessary.  

11. Close the hood.  

DRAINING FLUIDS AND OIL FILTER REMOVAL 

Tools Required 

J 41712 Oil Pressure Switch Socket 

Fig. 273: Removing Oil Pan Drain Plug 
Courtesy of GENERAL MOTORS CORP.

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

1. Remove the oil pan drain plug and allow the oil to drain. 

Fig. 274: View Of Engine Oil Filter 
Courtesy of GENERAL MOTORS CORP.

IMPORTANT: In order to completely drain the oil, the bottom of the oil pan must be level 

during the oil drain procedure.

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

2. Remove the engine oil filter. 

Fig. 275: Identifying Plug Location On Underside Of Block 
Courtesy of GENERAL MOTORS CORP. 

3. Remove the right rear engine block coolant drain hole plug and allow the coolant to drain. 

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 276: Engine Block Left Rear Coolant Drain Hole Plug 
Courtesy of GENERAL MOTORS CORP. 

4. Remove the left front engine block coolant drain hole plug, if applicable, and allow the coolant to drain. 

 

2004 Hummer H2 

2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2