Hummer H2. Manual - part 1777

1. Remove the positive crankcase ventilation (PCV) hose - dirty air. 

Fig. 296: View Of MAP Sensor 
Courtesy of GENERAL MOTORS CORP. 

2. Remove the manifold absolute pressure (MAP) sensor (714), if required.  

3. Remove the engine coolant air bleed clamp and hose from the throttle body. 

 

2004 Hummer H2 

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

  

Fig. 297: EVAP Purge Solenoid, Bolt & Isolator 
Courtesy of GENERAL MOTORS CORP. 

4. Remove the evaporative emission (EVAP) solenoid (708), bolt (710), and isolator (709). 

 

2004 Hummer H2 

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

  

Fig. 298: View Of Intake Manifold 
Courtesy of GENERAL MOTORS CORP. 

5. Remove the intake manifold bolts.  

6. Remove the intake manifold with gaskets. 

 

2004 Hummer H2 

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

  

Fig. 299: Intake Manifold-To-Cylinder Head Gasket 
Courtesy of GENERAL MOTORS CORP. 

7. Separate the intake manifold-to-cylinder head gaskets (514) from the manifold.  

8. Discard the intake manifold gaskets.  

COOLANT AIR BLEED PIPE REMOVAL 

 

2004 Hummer H2 

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