Hummer H2. Manual — part 2378

Electromagnetic Interference

IAT

Intake Air Temperature

IGN

Ignition

MAP

Manifold Absolute Pressure

MIL

Malfunction Indicator Lamp

NC

Normally Closed

NO

Normally Open

OBD

On Board Diagnostic

OSS

Output (Shaft) Speed Sensor

PC

Pressure Control

PCM

Powertrain Control Module

PWM

Pulse Width Modulation

2004 Hummer H2

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

RPM

Revolutions Per Minute

SS

Shift Solenoid

TAP

Transmission Adaptive Pressure

TCC

Torque Converter Clutch

TFP

Transmission Fluid Pressure

TFT

Transmission Fluid Temperature

TP

Throttle Position

TV

Throttle Valve

VSS

Vehicle Speed Sensor

WOT

Wide Open Throttle

4WD

Four-Wheel Drive

TRANSMISSION IDENTIFICATION INFORMATION

2004 Hummer H2

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

Fig. 487: Transmission Identification
Courtesy of GENERAL MOTORS CORP.

Callouts For Fig. 540

Plant and Shift Build Chart

Callout

Component Name

1

(4 = 2004)

2

Model

3

Hydra-Matic 4L60-E

4

Julian Date (or Day of the Year)

5

Shift Built (A, B, J = First Shift; C, H, W = Second Shift)

6

Serial Number

7

Transmission ID Location

7

Transmission ID Location

8

Optional Transmission ID Location

Plant

Build Line

1st Shift

2nd Shift

3rd Shift

2004 Hummer H2

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

TRANSMISSION COMPONENT AND SYSTEM DESCRIPTION

The mechanical components of the 4L60-E are as follows:

z

A torque converter with an electronically controlled capacity clutch (ECCC)

This transmission is equipped with an ECCC. The pressure plate does not fully lock to the torque
converter cover. Instead, the pressure plate maintains a small amount of slippage, about 20 RPM, in
SECOND, THIRD, and FOURTH gears, depending on the vehicle application. ECCC was developed to
reduce the possibility of noise, vibration, or chuggle caused by TCC apply. Typical apply speeds are 49-
52 km/h (30-32 mph) in THIRD gear and 65-73 km/h (40-45 mph) in FOURTH gear. Full lockup is
available at highway speeds on some applications.

z

Torque converter assembly

z

Servo assembly and 2-4 band assembly

z

Reverse input clutch and housing

z

Overrun clutch

z

Forward clutch

z

3-4 clutch

z

Forward sprag clutch assembly

z

Lo and reverse roller clutch assembly

z

Lo and reverse clutch assembly

z

Two planetary gear sets: Input and Reaction

z

Oil pump assembly

z

Control valve body assembly

The electrical components of the 4L60-E are as follows:

z

1-2 and 2-3 shift solenoid valves

z

3-2 shift solenoid valve assembly

z

Transmission pressure control (PC) solenoid

z

Torque converter clutch (TCC) solenoid valve

z

TCC pulse width modulation (PWM) solenoid valve

Toledo, OH

ML1

J

W

X

ML2

A

C

Not Used

ML3

B

H

Not Used

ML4

S

L

V

ML5

K

E

Z

Romulus, MI

1

A

-

B

Ramos Arizpe, Mexico

1

A

-

-

2004 Hummer H2

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