Hummer H2. Manual - part 2612

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2003-04 AUTOMATIC TRANSMISSIONS 

Servicing - H2 

APPLICATION 

TRANSMISSION APPLICATION 

IDENTIFICATION 

TRANSMISSION ID NUMBER 

Refer to illustration for main (1) and optional (2) locations of transmission ID number. See Fig. 1 . 

Application 

Transmission Model (RPO Code) 

H2 

4L65-E (M32) 

 

2004 Hummer H2 

2003-04 AUTOMATIC TRANSMISSIONS Servicing - H2

  

 

2004 Hummer H2 

2003-04 AUTOMATIC TRANSMISSIONS Servicing - H2

  

Fig. 1: Locating Transmission ID Number 
Courtesy of GENERAL MOTORS CORP.

 

2004 Hummer H2 

2003-04 AUTOMATIC TRANSMISSIONS Servicing - H2

  

TRANSMISSION PAN GASKET 

Fig. 2: Identifying Transmission Oil Pan Gasket (Hydra-Matic 4L65-E) 
Courtesy of GENERAL MOTORS CORP. 

LUBRICATION 

SERVICE INTERVALS 

Check transmission fluid level at each engine transmission oil change. Change the automatic transmission fluid 
and the filter every 100,000 miles for normal duty and every 50,000 miles for severe duty. Severe duty applies 
if the vehicle is mainly driven under one or more of these conditions:  

z

In heavy city traffic where the outside temperature regularly reaches 90°F (32°C) or higher. 

 

2004 Hummer H2 

2003-04 AUTOMATIC TRANSMISSIONS Servicing - H2