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