Hummer H2. Manual - part 289

CHK CDXX  

Displays when the CD changer encounters a focus or tracking error (if equipped). 

CHK TAPE  

Displays if a tape has been inserted but is unable to be played due to an error. 

DOOR OPEN  

Displays when the CD changer door has been left open (if equipped). 

NO DISC  

Displays when the radio expected a disc to be inserted. 

NONE  

Displays when the radio is unable to detect the vehicle speed data information via the class 2 serial data 
circuit. 

Voice Recorder 

To record a message, press the button with the circle on it and begin speaking. Press the button with the circle 
on it again to stop recording. System allows you to record up to 4 minutes of messaging. 

You may also press and hold the button with the circle on it while you are speaking and then let it go when you 
are finished. 

To play back messages, press the button with the right arrow on it. Pressing the right arrow button more than 
once will return you to previously recorded messages. If you press and hold this button for more than one 
second, all of the recorded messages will be played back. 

To delete messages, press the button with the square on it while the message is playing. If you press and hold 
the right arrow button and the circle button at the same time for 1/2 second, all of the messages will be deleted. 

Rear Seat Audio (RSA) 

The Rear Seat Audio and Rear HVAC control functions in the GMT 360/370/800 programs are combined into 
one dual function control unit. The audio portion of the controller provides dual audio source capability from 
the vehicle audio system. 

When in use, the audio portion of the controller enables rear seat occupants to listen to a different music source 
than the front seat occupants. The audio volume at each headphone is independently controlled by the rear 
passengers. A VF display in the center of the controller provides graphic communication to the rear seat 
operator the state of various rear audio functions. The dual source mode functionality is an embedded feature of 
the compatible radio receiver. Primary radio controls always have control of the front speaker outputs. Primary 

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Entertainment - Hummer H2

  

radio mode control is not affected by the operation of the rear audio control and always has priority over the 
rear audio control. 

The front seat occupants have the capability to override and disable the rear audio controller operation through 
the primary radio controls. An ignition cycle also causes the rear audio to default to the OFF state. 

Even when the primary radio is powered OFF, shutting OFF all speakers in the vehicle, the RSA controller 
functions are available. The rear passengers can still listen to any available audio source through the 
headphones. 

The controller shall have two stereo volume controls to vary the audio volume to the headphones. For each 
headphone, one element will provide the variable load to the left audio output and the other element will 
provide the variable load to the right audio output. 

XM Satellite Radio 

XM satellite radio provides digital radio reception. The XM signal is broadcast from two satellites and, where 
necessary, terrestrial repeaters. The high power satellite allow the antenna to receive the XM signal even when 
foliage and other partial obstructions block the antennas view of the satellite. Terrestrial repeaters are used in 
dense urban areas. These repeaters will receive the satellite signal and rebroadcast them at much higher power 
levels in order to ensure reception in areas with densely packed tall buildings. XM is a national satellite radio 
service that offers up to 100 coast to coast channels including music, news, sports, talk and children's 
programming. XM provides digital quality audio and text information, including song title and artist name. A 
service fee is required in order to receive the XM service. For more information contact XM at 
www.xmradio.com or call 1-800-852-9696 

Digital Radio Receiver 

The radio communicates with the digital radio receiver via the class 2 communications circuit. The digital radio 
receiver sends low level audio signals to the audio amplifier. 

Amplifier 

The amplifier in early build vehicles is a class 2 device that communicates with the scan tool on the Class 2 bus. 
The Class 2 amplifier will set a U100 in the radio if there is a communication problem. The late build vehicles 
have a NON-Class 2 amplifier that does not communicate over the Class 2 bus and therefore the NON-Class 2 
amplifier will not set codes. Both amplifiers have similar operating characteristics, therefore, there are not 
separate diagnostics for the NON-Class 2 amplifier. 

SPECIAL TOOLS AND EQUIPMENT 

SPECIAL TOOLS 

Special Tools 

Illustration

Tool Number/Description

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Entertainment - Hummer H2

  

J 39916-A 

CD and Cassette Diagnostic Audio Kit

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Entertainment - Hummer H2

  

2004 ACCESSORIES & EQUIPMENT

Lighting Systems - Hummer H2 

SPECIFICATIONS 

FASTENER TIGHTENING SPECIFICATIONS 

Fastener Tightening Specifications 

SCHEMATIC AND ROUTING DIAGRAMS 

LIGHTING SYSTEMS SCHEMATIC ICONS 

Lighting Systems Schematic Icons 

Application

Specification

Metric

English

DRL Lamp Nuts

6 N.m

53 lb in

Clearance Lamp Screw

3 N.m

26 lb in

Front Marker Lamp Screws

3 N.m

26 lb in

Headlamp Nuts

6 N.m

53 lb in

High Mounted Stop Lamp Screws

3 N.m

26 lb in

License Lamp Screws

3 N.m

26 lb in

License Plate Pocket Nuts - SUV

6 N.m

53 lb in

License Plate Spare Wheel Cover Nut - SUT

6 N.m

53 lb in

Park/Turn Lamp Nuts

6 N.m

53 lb in

Rear Marker Lamp Screws

3 N.m

26 lb in

Rear Tail/Turn Lamp Screws

6 N.m

53 lb in

Icon

Icon Definition

CAUTION:

When performing service on or near the SIR 
components or the SIR wiring, the SIR 
system must be disabled. Refer to SIR 
Disabling and Enabling Zones. Failure to 
observe the correct procedure could cause 
deployment of the SIR components, personal 
injury, or unnecessary SIR system repairs.

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Lighting Systems - Hummer H2

  

 

2004 Hummer H2 

2004 ACCESSORIES & EQUIPMENT Lighting Systems - Hummer H2