Hummer H2. Manual - part 2376

Fig. 485: 2-4 Servo Fluid Passages 
Courtesy of GENERAL MOTORS CORP. 

Callouts For Fig. 538 

48

Regulated Apply

Callout

Component Name

#7

3rd Accumulator Retainer and Ball Assembly (40)

#7

3rd Accumulator Retainer and Ball Assembly (40)

11

Case Servo Orificed Plug

11

Case Servo Orificed Plug

25

2nd Clutch

25

2nd Clutch

25

2nd Clutch

28

3rd Accumulator

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

28

3rd Accumulator

28

3rd Accumulator

32

4th

32

4th

32

4th

32

4th

43

Exhaust

43

Exhaust

44

Orificed Exhaust

44

Orificed Exhaust

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

Fig. 486: 1-2 Accumulator Cover Fluid Passages 
Courtesy of GENERAL MOTORS CORP. 

Callouts For Fig. 539 

Callout

Component Name

20

Accumulator

21

Orificed Accumulator

25

2nd Clutch

25

2nd Clutch

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2

  

TRANSMISSION GENERAL INFORMATION

How to Use This Section 

This section provides the following information: 

z

General diagnosis information on transmissions  

z

Procedures for diagnosing the Hydra-Matic transmission  

When you diagnose any condition of the Hydra-Matic transmission, begin with A Diagnostic Starting Point. 
This procedure indicates the proper path of diagnosing the transmission by describing the basic checks. This 
procedure will then refer you to the locations of specific checks. After you have determined the cause of a 
condition, refer to Repair Instructions for repair procedures. If the faulty component is not serviceable without 
removing the transmission from the vehicle, refer to Unit Repair for repair information. 

Basic Knowledge 

You must be familiar with some basic electronics in order to use this section of the service manual. You should 
also be able to use the following special tools: 

z

A digital multimeter (DMM)  

z

A circuit tester  

z

Jumper wires or leads  

z

A line pressure gauge set  

Diagnosis 

Diagnostic test probes are now available that allow you to probe individual wires without leaving the wire open 
to the environment. These probe devices are inexpensive and easy to install, and they permanently seal the wire 
from corrosion. 

DEFINITIONS AND ABBREVIATIONS 

Throttle Positions 

Engine Braking  

NOTE:

Do not, under any circumstances, attempt to diagnose a powertrain condition 
without basic knowledge of this powertrain. If you perform diagnostic 
procedures without this basic knowledge, you may incorrectly diagnose the 
condition or damage the powertrain components.

NOTE:

If you probe a wire with a sharp instrument and do not properly seal the wire 
afterward, the wire corrodes and an open circuit results.

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transmission - 4L60-E/4L65-E (Introduction) - Hummer H2