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