Hummer H2. Manual - part 1789

Fig. 344: Crankshaft Sprocket Key 
Courtesy of GENERAL MOTORS CORP. 

5. Remove the crankshaft sprocket key, if required.  

CAMSHAFT REMOVAL 

 

2004 Hummer H2 

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

  

Fig. 345: Camshaft Sensor & Bolt 
Courtesy of GENERAL MOTORS CORP. 

1. Remove the camshaft position (CMP) sensor bolt and the sensor. 

 

2004 Hummer H2 

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

  

Fig. 346: Camshaft Retainer & Bolts 
Courtesy of GENERAL MOTORS CORP. 

2. Remove the camshaft retainer bolts and the retainer. 

 

2004 Hummer H2 

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

  

Fig. 347: Camshaft Front Bolt Holes 
Courtesy of GENERAL MOTORS CORP. 

3. Remove the camshaft. 

1. Install the 3 M8 - 1.25 x 100 mm bolts in the camshaft front bolt holes.  

2. Using the bolts as a handle, carefully rotate and pull the camshaft out of the engine block.  

3. Remove the bolts from the front of the camshaft.  

PISTON, CONNECTING ROD, AND BEARING REMOVAL 

Tools Required 

NOTE:

All camshaft journals are the same diameter, so care must be used in 
removing or installing the camshaft to avoid damage to the camshaft 
bearings.

 

2004 Hummer H2 

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