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