Hummer H2. Manual - part 1478

Installation Procedure 

Fig. 187: Air Cleaner Assembly 
Courtesy of GENERAL MOTORS CORP. 

1. Position the air cleaner assembly onto the air cleaner adaptor. 

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

  

2. Install the fasteners. 

Tighten: Tighten the air cleaner housing fasteners to 10 N.m (89 lb in). 

3. Secure the air cleaner assembly onto the air cleaner adaptor. 

Fig. 188: Locating Air Flow Direction Arrow On MAF/IAT Sensor

NOTE:

Refer to Fastener Notice in Cautions and Notices.

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Courtesy of GENERAL MOTORS CORP.

4. Install the MAF/IAT sensor to the air cleaner assembly. 

IMPORTANT: If the MAF/IAT sensor is installed backwards, the fuel system goes rich. 

An arrow (2) cast into the plastic portion of the sensor indicates proper air 
flow direction. The arrow must point toward the engine.

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2

  

Fig. 189: MAF/IAT Sensor & Air Cleaner Assembly
Courtesy of GENERAL MOTORS CORP. 

5. Secure the clamps at the MAF/IAT sensor and the air cleaner assembly.  

6. Connect the MAF/IAT connector.  

7. Install the air intake duct. Refer to Air Cleaner Resonator Outlet Duct Replacement .  

AIR CLEANER RESONATOR OUTLET DUCT REPLACEMENT 

Removal Procedure 

 

2004 Hummer H2 

2004 ENGINE PERFORMANCE Engine Controls (Introduction) - 4.8L, 5.3L, and 6.0L - Hummer H2