Hummer H2. Manual - part 2392

range switch to the PCM. HI indicates an ignition voltage input to the PCM. LOW indicates a zero 
voltage input to the PCM. 

Traction Control  

Displays Active or Inactive. When the PCM receives a request for torque reduction from the electronic 
brake traction control module (EBTCM) Active is displayed. 

Trans. Fluid Temp.  

This parameter is the input signal of the transmission fluid temperature sensor. Transmission fluid 
temperature is high 151°C (304°F) when signal voltage is low, 0 V, and transmission fluid temperature is 
low -40°C (-40°F ) when signal voltage is high, 5 V. 

Trans. Slip Counter  

Displays 0, 1 or 2. This parameter is the number of times the P0894 Diagnostic test has identified a 
slipping condition. This diagnostic test is required to identify a slipping condition three times in a row in 
order to set the DTC P0894 Transmission Component Slipping Diagnostic code. 

Transfer Case Ratio  

This parameter indicates the ratio of the transfer case calculated by engine speed divided by transmission 
output speed based on transmission commanded gear. 

Transmission Hot Mode  

Displays On or Off. This parameter monitors transmission temperature. On indicates that the transmission 
temperature has exceeded 135°C (275°F). 

Transmission OSS  

The Transmission Output Speed Sensor parameter indicates the rotational speed of the transmission 
output shaft expressed as revolutions per minute. 

Vehicle Speed  

This parameter is the input signal from the vehicle speed sensor assembly. 

DIAGNOSTIC TROUBLE CODE (DTC) TYPE DEFINITIONS 

The DTC Type Definitions contain the characteristics for all types of DTCs. Each DTC type may or may not be 
found in this section. The DTC type is based on the action that the PCM takes when storing DTC information 
and whether or not the PCM illuminates a service lamp or displays a message on a driver information center 
(DIC). The DTC descriptions in the Diagnostic Trouble Code List/Type are listed in numeric order and indicate 
the DTC types for domestic and export vehicle applications. Each DTC is categorized into one of the following 
types: 

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transaxle, 4L60-E/4L65-E (Diagnostic Information & Procedures) - Hummer H2

  

Type A 

This DTC is emissions related. The PCM stores the DTC in History, Freeze Frame and Failure Records during 
the first trip in which the conditions for setting the DTC are met. The PCM also illuminates the malfunction 
indicator lamp (MIL) during the first trip in which the conditions for setting the DTC are met. 

Type B 

This DTC is emissions related. The PCM stores the DTC in Failure Records during the first trip in which the 
conditions for setting the DTC are met. The PCM stores the DTC in History and Freeze Frame during the 
second consecutive trip in which the conditions for setting the DTC are met. The PCM also illuminates the MIL 
during the second consecutive trip in which the conditions for setting the DTC are met. 

Type C 

This DTC is non-emissions related. The PCM stores the DTC in History and Failure Records during the first 
trip in which the conditions for setting the DTC are met. The PCM does not store the DTC in Freeze Frame and 
does not illuminate the MIL. For some type C DTCs, a message may be displayed on a DIC, if equipped. For 
other type C DTCs, a separate service lamp, other than the MIL, may be illuminated. Type C DTCs that do not 
display a message on the DIC or illuminate a separate service lamp were formerly referred to as type D. 

Type X 

This DTC is available in the PCM software, but has been disabled, or turned off. In this case, the diagnostic 
does not run, DTCs are not stored, and the MIL does not illuminate. Type X DTCs are used primarily for export 
vehicles that do not require MIL illumination or DTC storing. 

The service information contained in this manual refers to the domestic, federal, calibration package. Domestic 
calibrations apply to vehicles sold in the United States, Canada and Japan. Export calibrations exist for both 
leaded and unleaded vehicles. DTC types may change for some export vehicles, and some DTCs may be turned 
off for leaded export vehicles. Differences between domestic and export calibrations are not reflected on DTC 
support information pages. DTC types for export calibrations are referenced only in the Diagnostic Trouble 
Code List/Type. 

DIAGNOSTIC TROUBLE CODE (DTC) LIST/TYPE 

DTC List 

DTC

Domestic

Unleaded Export

Leaded Export

DTC P0218

C

C

C

DTC P0502

B

B

C

DTC P0503

B

B

C

DTC P0706

C

C

C

DTC P0711

C

C

C

DTC P0712

C

C

C

DTC P0713

C

C

C

DTC P0719

C

C

C

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transaxle, 4L60-E/4L65-E (Diagnostic Information & Procedures) - Hummer H2

  

DTC P0724

C

C

C

DTC P0740

B

B

C

DTC P0741

B

B

C

DTC P0742

B

B

C

DTC P0748

C

C

C

DTC P0751

B

B

C

DTC P0752

B

B

C

DTC P0753

B

B

C

DTC P0756

A

A

C

DTC P0757

A

A

C

DTC P0758

A

A

C

DTC P0785

B

B

C

DTC P0894

B

B

C

DTC P1810

B

B

C

DTC P2761

B

B

C

DTC P2771

B

B

C

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transaxle, 4L60-E/4L65-E (Diagnostic Information & Procedures) - Hummer H2

  

2004 TRANSMISSION

Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting) 

AUTOMATIC TRANSAXLE (TROUBLESHOOTING) 

SYMPTOMS - AUTOMATIC TRANSMISSION 

Symptom Diagnosis 

Diagnostic Category

Diagnostic Information

This table consists of nine diagnostic categories that are located in the left column. Using this column, 
choose the appropriate category based on the operating conditions of the vehicle or transmission. After 
selecting a category, use the right column to locate the specific symptom diagnostic information.
Fluid Diagnosis: 
This category contains the following topics: 

z

Fluid condition - appearance, 
contaminants, smell, overheating  

z

Line pressure - high or low  

z

Fluid leaks  

z

Refer to Transmission Fluid Checking 
Procedure .  

z

Refer to Oil Pressure High or Low .  

z

Refer to Fluid Leak Diagnosis , procedure.  

z

Refer to Oil Out the Vent .  

Noise and Vibration Diagnosis: 
This category contains the following topics: 

z

Ratcheting noise  

z

Noise - drive gear, final drive, whine, 
growl, rattle, buzz, popping  

z

Vibration  

z

Refer to Ratcheting Noise .  

z

Refer to Vibration in Reverse and Whining 
Noise in Park .  

z

Refer to Popping Noise .  

z

Refer to Whine Noise Varying with RPM or 
Fluid Pressure .  

z

Refer to Buzz Noise or High Frequency Rattle 
Sound .  

z

Refer to Noise in Random Ranges .  

Range Performance Diagnosis: 
This category contains the following topics: 

z

Drives in Neutral  

z

No Park  

z

No Reverse  

z

No Drive  

z

No engine braking  

z

Shift selector indicator does not match 
transmission gear range  

z

Lack of Power or Hesitation  

z

Refer to Drives in Neutral .  

z

Refer to No Park .  

z

Refer to No Reverse or Slips in Reverse .  

z

Refer to No Drive in All Ranges .  

z

Refer to No Drive in Drive Range .  

z

Refer to No Overrun Braking - Manual 3-2-1 . 

z

Refer to Range Selector Displays Incorrect 
Range .  

z

Refer to Lack of Power or Hesitation .  

Shift Quality (Feel) Diagnosis: 
This category contains the following topics: 

z

Refer to Harsh Shifts .  

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting)

  

 

2004 Hummer H2 

2004 TRANSMISSION Automatic Transaxle - 4L60-E/4L65-E (Troubleshooting)