Hummer H2. Manual - part 1444

Fig. 65: Oiling Male Pipe Ends (Metal Collar) 
Courtesy of GENERAL MOTORS CORP. 

1. Apply a few drops of clean engine oil to the male pipe end. 

Fig. 66: Connecting Fittings (Metal Collar) 
Courtesy of GENERAL MOTORS CORP.

CAUTION: Always apply a few drops of clean engine oil to the male pipe ends 

before connecting the fuel pipe fittings in order to reduce the risk of 
fire and personal injury. This will ensure proper reconnection and 
prevent a possible fuel leak. During normal operation, the O-rings 
located in the female connector will swell and may prevent proper 
reconnection if not lubricated.

 

2004 Hummer H2 

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

  

2. Push both sides of the fitting together in order to snap the retaining tabs into place. 

Fig. 67: Ensuring Secure Connection (Metal Collar) 
Courtesy of GENERAL MOTORS CORP. 

3. Once installed, pull on both sides of the fitting in order to make sure the connection is secure.  

4. Install the retainer to the quick-connect fitting.  

QUICK CONNECT FITTING(S) SERVICE (PLASTIC COLLAR) 

Removal Procedure 

 

2004 Hummer H2 

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

  

Fig. 68: Blowing Out Dirt (Plastic Collar) 
Courtesy of GENERAL MOTORS CORP. 

1. Relieve the fuel system pressure before servicing any fuel system connection. Refer to Fuel Pressure 

Relief Procedure . 

2. Using compressed air, blow any dirt out of the quick-connect fitting. 

CAUTION: Refer to Safety Glasses and Compressed Air Caution in Cautions and 

Notices.

 

2004 Hummer H2 

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

  

Fig. 69: Squeezing Plastic Tabs Of Male End Connector (Plastic Collar) 
Courtesy of GENERAL MOTORS CORP. 

3. Squeeze the plastic retainer release tabs. 

 

2004 Hummer H2 

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