Entertainment System Chevrolet Avalanche I

Fastener Tightening Specifications

Identifying Fastener Tightening Specifications

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Diagnostic Starting Point - Entertainment

Begin the system diagnosis with the DIAGNOSTIC SYSTEM CHECK - ENTERTAINMENT SYSTEM . The Entertainment System Diagnostic System Check will provide the following information

1. The identification of the control modules which command the system
2. The ability of the control modules to communicate through the serial data circuit
3. The identification of any stored diagnostic trouble codes (DTCs) and their status

The use of the Entertainment System Diagnostic System Check will identify the correct procedure for diagnosing the system and where the procedure is located.

Test Description

The numbers below refer to the step numbers on the diagnostic table.

1. 2. Lack of communication may be due to a partial malfunction of the class 2 serial data circuit or due to a total malfunction of the class 2 serial data circuit. The specified procedure will determine the particular condition.
2. 4. Uses the scan tool to determine if there are any codes in the Radio module.
3. 5. The presence of DTCs which begin with "U" indicate some other module is not communicating. The specified procedure will compile all the available information before tests are performed.
4. 6. The presence of DTCs that begin with the letter "B" indicates an issue with a module that communicates with BCM.

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Scan Tool Data Definitions

8-Digit GM Part Number: The scan tool displays an 8 digit alphanumeric number. The part number of the module.

Amp Type: The scan tool displays the type of amplifier installed in the vehicle, Bose/Non-Bose.

Antenna Enable: The scan tool displays Active/Inactive.

Audio Device: The scan tool displays Null/Tuner/CD Player. The radio detects the presence of the device that is operating.

Balance: The scan tool displays -50 to +50. The Balance between the right and left audio output.

Bass: The scan tool displays 0-100%. The percentage of bass selected at the radio.

Battery Voltage: The scan tool displays 0-18 Volts. The Voltage measured from the radio or amplifier's ignition positive voltage circuit to ground.

Cal. Module 1 Part No.: The scan tool displays the 8 digit part number of the module.

Cal. Module 1 Suffix: The scan tool displays the 2 position suffix of the module.

CD Changer: The scan tool displays Connected if a CD changer is detected or Not Connected if no CD changer is present.

CD Changer Disc Number: The scan tool displays which CD the changer is currently playing.

CD Changer Track Number: The scan tool displays the track number of the disc that is currently playing.

CD Inserted: The scan tool displays Yes or No. Whether a CD is loaded or not.

Chime Type: The scan tool displays the type of chime select such as fast.

Chime Speaker: The scan tool displays Front Left, Front Right, LF Woofer, Back Left, Back Right, RF Woofer. The selected chime speaker is displayed

Chime Volume: The scan tool displays 0-100%. The percentage at which the chime volume has been calibrated to.

Day: The scan tool displays the day the software was created.

External Audio Device: The scan tool displays Connected/Not Connected. The radio senses the presence of an external audio device.

Fade: The scan tool displays -50 to +50. The Fade between the front and rear audio output.

Ignition Counter: The scan tool displays the number of ignition cycles.

Ignition Since Current DTC: The scan tool displays 0-225 Cycles. The number of ignition cycles since a current DTC was set.

Julian Date of Build: The scan tool displays 0-999. The month and year that the module was built.

Microphone Level: The scan tool displays 0-100%. The percentage of microphone selected at the radio.

Midrange: The scan tool displays 0-100%. The percentage of midrange selected at the radio.

Month: The scan tool displays the month the software was created. Mute

Noise Compensation: The scan tool displays On/Off. The selected switch position of the noise compensation system.

Operational S/W Part No.: The scan tool displays the 8 digit software part number of the module.

Operational S/W Suffix: The scan tool displays the 2 position software suffix of the module.

Personalization: The scan tool displays Driver 1/ Driver 2.

Phone: The scan tool displays wether or not a phone is present or not present.

Power Mode: The scan tool displays what power mode the module is on.

RSA: The scan tool displays Present/Not Present. Present is displayed if rear seat entertainment control is installed in the vehicle.

Signal Strength: The scan tool displays 0-225 dB. The signal strength of the radio frequency.

Software Version: The scan tool displays the version of software.

Speed Compensated Volume: The scan tool displays Off/Low/Medium/High according to what the auto volume is set on the module.

Source: The scan tool displays Off/Tuner/ICDX/CD/Cassette. This data parameter indicates the source that is operating.

Theft Armed: The scan tool displays Learned VIN/No VIN. The Scan tool displays Learned VIN when the theft mode has been turned ON by recognizing a valid VIN #.

Theft Locked: The scan tool displays Locked/Unlocked. The scan tool displays locked when the radio receives the incorrect VIN number across Class 2 lines.

Treble: The scan tool displays 0-100%. The percentage of treble selected at the radio.

Volume: The scan tool displays 0-100%. The percentage of volume selected at the radio.

Year: The scan tool displays the year the software was created.

Year Module Built: The scan tool displays 1990-2020. The production year the module was manufactured.

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Circuit Description

When the radio is powered up, the radio supplies low level audio signals to the speakers. If the vehicle is equipped with an audio amplifier, the amplifier will boost the signal sent to the speakers.

Conditions for Running the DTC

The test is performed when the radio switches from OFF to ON. The radio will continue to test for the fault once every 0.5 seconds.

Conditions for Setting the DTC

The radio sets a current status for this DTC when a short to ground or voltage is detected on any of the speaker channels for 1.5 seconds.

Action Taken When the DTC Sets

No sound is present from one or more of the speakers.

Conditions for Clearing the DTC

The fault condition is not present for 5 seconds.

The numbers below refer to the step numbers on the diagnostic table.

1. 2. This step verifies that the DTC is still present.
2. 3. This step isolates the fault condition.

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The Antenna Enable/Amplifier On Signal is a class 2 signal sent from the radio through the RSA module, when equipped. The amplifier will reach full output capabilities 900 milliseconds after receiving this signal. The amplifier will then be capable of class 2 functions 60 milliseconds after being turned ON. This DTC will be set if the circuit is shorted to ground or battery.

This test is run at least every 50 milliseconds.

The failure must occur for at least 3 seconds.

The Antenna Enable/Amplifier On Signal Circuit becomes disabled, causing the controlled module to become inoperative.

The failure criteria is no longer detected for 50 milliseconds.

The numbers below refer to the step numbers on the diagnostic table.

1. 2. This step helps to determine if the Diversity Antenna System is operating.
2. 3. This step helps to determine if Radio Antenna Module is receiving the proper signal from the radio.

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The digital radio antenna is connected to the digital radio receiver by 2 coax cables. One coax carries the satellite signal, the other coax carries the terrestrial signal. The antenna cable for the satellite antenna also provides a path for D.C. current for powering the antenna.

This test is run every 300 milliseconds.

The digital radio receiver detects an antenna fault.

The radio displays "No XM Signal."

The condition must be corrected.

The number below refers to the step number on the diagnostic table.

1. 3. Due to current limiting capabilities in the module, an antenna cable shorted to ground could still show 1200-1800 mV.

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This DTC is generated by the module when the Theft Lock is activated. This occurs when the VIN as received over the class 2 communication circuit and the VIN as stored in the module memory do not match. This also occurs when no VIN is received over the class 2 circuit. The only circuit required is the class 2 communications line.

This test is run every 300 milliseconds.

This DTC is generated by the module when the VIN as received over the class 2 communication circuit and the VIN as stored in the module memory do not match. This also occurs if no VIN is received over the class 2 circuit. This DTC test runs when the Radio changes from OFF to ON.

The Radio does not function. The Radio will display Locked - THEFTLOCK Active.

Conditions for Clearing the MIL/DTC

Re-calibration with the correct calibrations for the vehicle and cycling the Radio to OFF then to ON will clear the DTC if there is no damage to the Radio.

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The steering wheel controls are simple momentary contact switches that connect a series of resistors so that each switch selection corresponds to a fixed resistance value. The truck body computer (TBC) determines which switch has been pressed by the voltage drop across the corresponding resistance value.

This test is run every 125 milliseconds.

The switch must be stuck pressed for at least 30 seconds.

The TBC will ignore the switch command.

The stuck switch condition must be corrected.

Diagnostic Aids

1. The following may cause an intermittent: A bent terminal A backed out terminal A damaged terminal Poor terminal tension A chafed wire A broken wire inside the insulation
2. When diagnosing for an intermittent short or an open, massage the wire harness while watching the test equipment for changes.

The number below refer to the step number on the diagnostic table.

1. 3. This step verifies that the steering wheel convenience switch is stuck. The convenience switches operate in the 123-247 count range. The value given is the normal condition that exists when no switch is activated.

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Symptoms - Entertainment

Important: Review the system operation in order to familiarize yourself with the system functions. Refer to RADIO/AUDIO SYSTEM DESCRIPTION AND OPERATION .

Visual/Physical Inspection

1. Inspect for aftermarket devices which could affect the operation of the Radio/Audio system. Refer to CHECKING AFTERMARKET ACCESSORIES in Wiring Systems.
2. Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.

Intermittent

Faulty electrical connections or wiring may be the cause of intermittent conditions. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems.

Symptom List

Refer to a symptom diagnostic procedure from the following list in order to diagnose the symptom

1. «RADIO POOR RECEPTION»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system__radio-poor-reception)
2. «DIGITAL RADIO POOR OR NO RECEPTION»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
3. «AUDIO DISTORTION - ONE OR MORE SPEAKERS»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
4. «REMOTE PLAYBACK DEVICE INOPERATIVE»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
5. «REMOTE PLAYBACK DEVICE - AUDIO NOISE»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
6. «REMOTE PLAYBACK DEVICE LEFT OR RIGHT CHANNEL INOPERATIVE»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
7. «RADIO DISPLAYS LOC, LOCKED, OR CODE»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
8. «RADIO DISPLAYS CLN OR CLEAN (W/O UM8)»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) or «RADIO DISPLAYS CLN OR CLEAN (W/ UM8)»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
9. «RADIO DISPLAYS CAL OR CAL ERR (W/O UM8)»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) or «RADIO DISPLAYS CAL OR CAL ERR (W/ UM8)»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
10. «TAPE PLAYER WEAK, SLOW, OR GARBLED OUTPUT»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
11. «STEERING WHEEL CONTROLS INOPERATIVE»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
12. «REDUCED VOLUME - ONE OR MORE SPEAKERS (W/O UM8)»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) or «REDUCED VOLUME - ONE OR MORE SPEAKERS (W/ UM8)»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
13. «SPEAKERS INOPERATIVE - ONE OR MORE»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system__speakers-inoperative-one-or-more)
14. «VIDEO ENTERTAINMENT SYSTEM TROUBLESHOOTING HINTS»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
15. «RADIO AUDIO INOPERATIVE AT REAR SEAT AUDIO (RSA) CONTROL»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)
16. «VIDEO ENTERTAINMENT SYSTEM INOPERATIVE»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system)

Audio System Troubleshooting Hints

Many conditions that affect radio operation may be corrected without removing the radio from the car. Verify the condition, and follow the diagnostic procedures in order to isolate and correct the condition. In order to properly diagnose any audio system problems, ensure that you have a fully charged battery.

Preliminary Inspections

Important: When testing the audio system for poor reception or noise, the vehicle should be outside away from metal buildings and utility lines, with the hood and rear compartment closed.

1. Check for any aftermarket equipment that may have been installed on the vehicle. If aftermarket equipment is found disconnect it and check if the audio noise is still present. Inspect that the antenna connector and the antenna coaxial cable are clean and tight.
2. For reception concerns, first determine if the customer is within the listening area of the stations they are attempting to receive.
3. Stations at the lower end of the FM band are more susceptible to audio noises than stations at the higher end.
4. If the noise is only from one speaker check for the following before speaker replacement: Isolate the noise using the J 39916-A CD and Cassette Diagnostic Audio Kit. Inspect the speaker connections to ensure they are clean and tight. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems. Inspect for a loose or incorrectly installed speaker or surrounding trim. Loose trim can cause a buzz or flutter which sounds like a malfunctioning speaker.
5. Ignition noise on the FM band may be an indication of an ignition system problem.
6. Inspect that all vehicle grounds are clean, tight and free of corrosion.
7. Inspect the rear defogger grid lines for large breaks or dark spots.
8. Inspect the connections at the radio antenna module if equipped, to ensure that they are clean and tight.
9. Compare the customers vehicle to another of similar model and audio system to determine if the condition is abnormal.

Identifying Concerns

1. In order to isolate the source of the noise/poor reception, identify the ignition switch position that the concern is most noticeable: 1.1 Turn the ignition switch to the accessory position. 1.2 Turn ON the radio. 1.3 Seek up 88-108 FM then 550-1600 AM. 1.4 Record the number of valid radio stations where the tuner stops. 1.5 Repeat these steps with the ignition ON, and the engine OFF then again with the engine running.
2. Return the ignition switch to the position that the concern was most noticeable.
3. Remove fuses or circuit breakers one at a time until the noise has been eliminated.
4. Identify what systems or components are powered by the fuse.
5. Reinstall all fuses and circuit breakers.
6. Disconnect the components powered by the fuse one at a time until the concern has been eliminated.

Corrective Action

1. Inspect the ground integrity of the component or system causing the noise.
2. Malfunctioning and marginal components such as relays and solenoids may cause noise and/or poor reception.
3. Always use a braided ground strap when applying additional grounds and keep the ground strap as short as possible.
4. If the noise source is found to be coming from the vehicle harness: Route the antenna cable separately from the wire harness that is emitting the noise. Use aluminum or nickel tape in order to shield the antenna cable. Try variations of the following repairs
5. Try adding only aluminum or nickel tape before adding a ground strap to the tape.
6. Wrap a ground strap 360 degrees around the tape, securing the other end of the strap to chassis ground.

Important: When installing suppression devices, signal wires such as sensor and communication circuits should not be suppressed. Battery and ignition voltage circuits are the best choices for suppressing.

1. Capacitors work best on switch pops and low frequency noise.
2. Filters work best on high frequency whines and static.
3. After adding any suppression device, inspect all of the vehicle systems including those not related to the audio system, for proper operation and function.
4. Whenever possible, make a test harness that includes filters or capacitors. Always inspect the effectiveness and operation before permanent installation.
5. If an audible pop is caused due to operating a switch, perform the following repairs as necessary: Add a capacitor across the contacts of the switch. Add a capacitor from the battery positive voltage (B+) side of the switch to chassis ground. Add a capacitor from the ground side of the switch to chassis ground.
6. Use the following available noise suppression devices

1. 220 micro farad (50 V) capacitor GM P/N 1227895 - Works well for ignition system related noise.
2. 0.47 micro farad capacitor GM P/N 1227894 - Works well for switches and relays.
3. Feed through capacitor GM P/N 477371 - Works well for high current situations.
4. Filter package GM P/N 1224205 - Works well for low current situations.
5. Fuel pump suppressor GM P/N 25027405
6. 21 inch braided ground strap GM P/N 8910791
7. 19 inch braided ground strap GM P/N 6286800
8. 10.5 inch braided ground strap GM P/N 6287160
9. 8.5 inch braided ground strap GM P/N 12091511

Generator Whine Concerns

1. Inspect the ground terminal and cable for high resistance.
2. Inspect the generator and brackets for loose or coated mounting bolts.
3. Inspect that the ground straps between the engine and the frame are clean and tight.
4. If the noise is still present, inspect the charging system for proper operation. Refer to DIAGNOSTIC STARTING POINT - ENGINE ELECTRICAL in Engine Electrical.
5. Install a filter GM P/N 1224205 in the battery voltage feed circuit to the radio.
6. If the noise is not eliminated, install the filter in each following variation: Install the filter with the single wire side toward the radio and the ground wire attached to chassis ground. Remove the ground to the filter. Reverse the filter so the 2-wire side is toward the radio with the ground wire attached to chassis ground. Remove the ground from the filter.
7. If the filter GM P/N 1224205 causes a delay when turning the radio ON or OFF, or other problems, remove the filter and install a 0.47 micro farad capacitor to chassis ground.
8. Before reassembling the vehicle, remove any unneeded filters.
9. Test the functionality all of the vehicle systems including those not related to the audio system, for proper operation and function.

Radio Poor Reception

Schematic Reference: RADIO/AUDIO SYSTEM SCHEMATICS (BASE/UPLEVEL RADIO - UQ3/UQ5) or RADIO/AUDIO SYSTEM SCHEMATICS (PREMIUM RADIO - UQ7 W/O Y91) or RADIO/AUDIO SYSTEM SCHEMATICS (LUXURY RADIO - UQ7 W/Y91)

Always perform the Radio/Audio System Diagnostic System Check before proceeding with these diagnostic procedures. Refer to DIAGNOSTIC SYSTEM CHECK - ENTERTAINMENT SYSTEM .

Antenna System Test

Important: Always zero out the DMM before taking a resistance measurement in order to ensure an accurate reading.

1. Disconnect the negative battery cable.
2. Disconnect the antenna lead-in connector from the radio receiver.
3. Measure the resistance from the negative battery cable to the coax outer conductor connector.
4. The resistance measured should be 0.20 ohms or less.
5. Test the following when the resistance is greater than 0.20 ohms. Base of the antenna for a poor connection to body ground. The coaxial cable interconnects for a poor connection or corrosion. Test for an open or high resistance from the battery negative cable to the body.
6. After finding and correcting the condition, operate the system in order to verify the repair.

Perform the Antenna Checking Procedures after confirming the integrity of the antenna ground.

Antenna Checking Procedures

Perform the following tests for the type of antenna on the vehicle.

Mast Antennas

Unplug antenna lead-in connector from radio receiver and plug a test antenna into radio. Make sure antenna base is grounded to the vehicle chassis and keep hands off the mast.

Check radio reception in an area away from electrical interferences. Tune to several weak and strong AM and FM stations. If the radio reception improved, the problem exists with the antenna and/or lead-in cable. If the reception is still poor, Refer to AUDIO SYSTEM TROUBLESHOOTING HINTS .

Important: Always zero out the DMM before taking a resistance measurement in order to ensure an accurate reading.

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Refer to the table when testing the antenna and/or lead-in cable.

1. Measure the resistance from the coax center conductor to antenna mast.
2. Total resistance from end to end of center conductor: RG-58/RG-59 type cable - less than 0.20 ohms RG-62/RG-62M type cable - less than 3.5 ohms
3. When checking the resistance, cautiously wiggle the lead-in tip and cable. Refer to TESTING FOR INTERMITTENT AND POOR CONNECTIONS in Wiring Systems.
4. Measure the resistance from the cable center conductor to metal case.
5. Replace the antenna and/or lead-in cable when the above readings are not obtained.

Diversity Antenna System

Important: This diversity antenna system is comprised of 3 glass mounted antennas, a radio antenna module, and an FM impedance matching module. The primary AM and FM antennas are an integral part of the left rear quarter glass and are connected to the radio antenna module. The secondary FM antenna is an integral part of the right rear quarter glass and is connected to the FM impedance matching module. The radio antenna module processes the antenna reception signals and phase aligns them to create one strong signal. The FM impedance matching module boosts the secondary antenna signal and transmits it to the radio antenna module.

The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition. If the test leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement. If the test leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement.

Perform the Antenna System Test and test the antenna coax cable prior to performing any of the following tests.

Poor Reception on Both AM and FM Bands

1. The radio antenna module is not grounded properly. The module grounding screws should be clean and tight. The antenna module ground is either a chassis ground or a ground strap. Measure the resistance from the antenna module base plate to a good ground. Resistance should be 0.20 ohms or less. Find and correct the condition if the resistance is out of specification.
2. The antenna enable signal is not present at the radio antenna module. This could be caused by an output failure of the radio or an open/shorted antenna enable signal circuit. In order to test the antenna enable signal circuit, the radio must be ON and tuned to the FM band. Disconnect the radio antenna module. Measure the voltage from the antenna enable signal circuit of the radio antenna module to a good ground. Voltage measured should be near 12 V. If the specified voltage is measured, test the antenna enable signal circuit for an open or short to ground. If no failures were found, replace the radio. Refer to «RADIO REPLACEMENT»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) for service procedure.
3. The FM composite signal circuit to the radio antenna module is open or shorted to ground. Test the FM composite signal circuit for an open or short to ground.
4. The feed coax at the radio antenna module has been inadvertently swapped with the FM impedance matching module crossover coax. Ensure that the feed coax, marked with a yellow band, is in the correct socket on the radio antenna.
5. Improper retention of the antenna cable in the floating retainer. Poor or no connection with the radio will result when the radio is installed if the antenna cable is not properly attached in the floating retainer. Inspect the antenna cable for movement in the floating retainer. Replace the antenna cable if movement is found.
6. Defective Radio Control Module. Replace Radio Control Module. Refer to «MODULE REPLACEMENT - RADIO ANTENNA DIVERSITY»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) for service procedure.

Poor Reception on AM Band Only

1. Defective AM antenna.
2. Defective Radio Control module. Replace Radio Control Module. Refer to «MODULE REPLACEMENT - RADIO ANTENNA DIVERSITY»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) for service procedure.

Poor Reception on FM Band Only

1. Defective primary or secondary FM antenna
2. Defective Radio Control Module. Replace Radio Control Module. Refer to «MODULE REPLACEMENT - RADIO ANTENNA DIVERSITY»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) for service procedure.

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Speakers Inoperative - One or More

Schematic Reference: RADIO/AUDIO SYSTEM SCHEMATICS (BASE/UPLEVEL RADIO - UQ3/UQ5) or RADIO/AUDIO SYSTEM SCHEMATICS (PREMIUM RADIO - UQ7 W/O Y91) or RADIO/AUDIO SYSTEM SCHEMATICS (LUXURY RADIO - UQ7 W/ Y91) .

Preliminary Information

Perform the DIAGNOSTIC SYSTEM CHECK - ENTERTAINMENT SYSTEM .

Important: The following information lists the most probable cause of the concern to the least probable cause. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with replacement.

All Speakers Inoperative

Important: The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement.

With RPO UM8

1. Battery positive voltage circuit to the amplifier open. Test the battery positive voltage circuit to the amplifier for an open.
2. Ground circuit to the amplifier open. Test the ground circuit to the amplifier for an open.
3. Speaker output from the radio shorted. Test each speaker output of the radio for a short to ground or short to voltage.
4. No audio output from the amplifier. Replace the amplifier. Refer to «AMPLIFIER REPLACEMENT»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) .

One Speaker Inoperative

Important: The following information lists the most probable cause of the concern to the least probable cause. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with replacement.

Without RPO UQ7

1. Speaker output open. Test the appropriate speaker output circuits for an open. Important: The radio must be programmed after replacement. With RPO UM8 perform the «RADIO SETUP»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) .
2. No audio output from the radio. Test for any AC voltage between the appropriate speaker output circuits at the speaker harness connector, disconnected with the radio volume adjusted to 50 percent. If AC voltage is present, replace the speaker. Refer to «SPEAKER REPLACEMENT REFERENCE»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) . If no AC voltage is present, replace the radio. Refer to «RADIO REPLACEMENT»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) .

With RPO UQ7

1. Speaker output circuit from amplifier open. Test the appropriate speaker output circuits for an open. Important: With RPO Y91, Bose amplifier, perform the setup procedure for the amplifier. Refer to «AUDIO AMPLIFIER SETUP»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system__audio-amplifier-setup) .
2. No audio output from the amplifier. Test for any AC voltage between the appropriate speaker output circuits at the speaker harness connector, disconnected with the radio volume adjusted to 50 percent. If AC voltage is present, replace the speaker. Refer to «SPEAKER REPLACEMENT REFERENCE»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) . If no AC voltage is present, replace the amplifier. Refer to «AMPLIFIER REPLACEMENT»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) .

Speakers - One Channel Inoperative

Important: The following information lists the most probable cause of the concern to the least probable cause. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with replacement.

Important: With RPO Y91, Bose amplifier, perform the setup procedure for the amplifier. Refer to AUDIO AMPLIFIER SETUP .

1. Speaker output circuit from amplifier shorted. Test the appropriate speaker output circuits for a short to ground or short to voltage.
2. Replace the amplifier. Refer to «AMPLIFIER REPLACEMENT»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) .

Front Speakers Inoperative

1. Speaker output circuit from amplifier shorted. Test the appropriate speaker output circuits for a short to ground or short to voltage.
2. Replace the amplifier. Refer to «AMPLIFIER REPLACEMENT»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) .

Rear Speakers Inoperative

1. Speaker output circuit from amplifier shorted. Test the appropriate speaker output circuits for a short to ground or short to voltage.
2. Replace the amplifier. Refer to «AMPLIFIER REPLACEMENT»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) .

Schematic Reference: VIDEO SYSTEM SCHEMATICS

1. Many conditions that affect video system operation may be corrected without removing the radio, the digital video disc (DVD) player or the video entertainment overhead console from the vehicle. Make sure to understand all features of system operation before beginning the diagnosis of the system. Verify the condition and follow the diagnostic procedures in order to isolate and correct the condition.
2. Be sure the vehicle battery is fully charged before beginning video entertainment system diagnosis.

Video or Audio Distortion

The manufacturing process for producing DVD's does not have the same quality control processes in place that compact disk manufacturing does. If there are video or audio quality problems with an individual DVD, try playing that disk in another DVD player. If the quality is poor for both players, return the disk to the place of purchase and request an exchange. If the quality problem is only seen in one of the players, examine the disk for scratches dirt or smudges and attempt to clean the disk with one of the disk cleaning systems that are commercially available. Video or audio distortion during auxiliary playback can often be attributed to the DC to AC inverter that is used to power the auxiliary device. The power inverters tend to introduce noisy signals into the vehicle electrical system.

Important: The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition.

1. Volume control on the wireless headphone set is turned all the way down. Adjust the volume control on the headphones.
2. Dead batteries in the wireless headphone set. Turn on power to the headphone set. If the headset indicator does not turn on, replace the batteries in the headset as needed.
3. Faulty headphone set. Test the operation of the system using a known good headphone set. If operation is OK, replace the vehicle headphone set.

The buttons on the video remote control do not operate the video disc player but the buttons on the video disc player operate normally.

Important: The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition.

1. Dead batteries in the video remote control. Replace the dead batteries.
2. Faulty remote control. Test the operation of the system using a known good remote control. If operation is OK, replace the remote control.

Scheme 103

Scheme 104

Scheme 105

Audio Amplifier Setup

For the Bose Amplifier (UQ7, w/Y91), complete the following procedure.

1. Turn the ignition ON, engine OFF
2. At the Main Menu screen, select Diagnostics.
3. At the Vehicle Identification screen, select the following options: 3.1. Model Year 3.2. LD Trk, MPV, Incomplete
4. At the System Selection Menu screen, select Body.
5. At the Vehicle Identification screen, select the following options: 5.1. C or K(Platform type) 5.2. Select the appropriate HVAC system: CJ2 Dual Zone HVAC, Auto CJ3 Dual Zone HVAC, Manual
6. Select Uplevel Radio.
7. At the Body screen, select Amplifier.
8. Select Special Functions.
9. At the Special Functions screen, select Recalibration.
10. Select the appropriate body style/vehicle type.
11. Press the Setup Module key.
12. Verify the scan tool displays "Procedure in Progress."
13. When the calibration ends press EXIT on the scan tool.
14. Cycle the ignition. Setup is complete.

Radio Theft Procedure

Complete the following procedure, using a scan tool, in order to properly set up communication

1. At the Main Menu screen, select: Diagnostics.
2. At the Vehicle Identification screen, select the following options: Model Year LD Trk, MPV, Incomplete
3. At the System Selection Menu screen, select: Body
4. At the Vehicle Identification screen, select the following: Appropriate model Appropriate Air Conditioning Navigation Radio
5. At the Body Screen, select: Navigation Radio.
6. At the Radio screen, select: Special Functions.
7. At the Special Functions screen, select: VIN Relearn.
8. At the VIN Relearn screen, the scan tool will display "Do you want to clear radio theft information?"
9. To begin clearing, press the soft touch key on the top right of the scan tool. The scan tool will display "Clearing Radio Theft in Progress."
10. Press EXIT on the scan tool and cycle the ignition.

Important: The radio theft will learn the VIN. Without learning the VIN, the radio will display a locked message (LOC or LOCKED).

Digital Radio Receiver Setup

Important: The Digital Radio Receiver Setup option does not contain a submenu. Digital Radio Receiver Setup will configure the following systems

1. DTCs
2. Class 2 radio messages

For the Digital Radio Receiver, complete the following procedure with the key in the ON position, use a scan tool in order to properly set up communication

1. At the Main Menu screen, select Diagnostics.
2. At the Vehicle Identification screen, select the following options: 2.1. Model Year 2.2. Vehicle Line
3. At the System Selection Menu screen, select Body.
4. At the Vehicle Identification screen, select the following: 4.1. Platform Type 4.2. Body Type
5. At the Body screen, select Digital Radio Receiver.
6. Select Special Functions.
7. At the Special Functions screen, select DRR Setup.

Scheme 106

Removal Procedure

1. Remove the cluster bezel. Refer to BEZEL REPLACEMENT - INSTRUMENT PANEL (I/P) CLUSTER in Instrument Panel, Gages and Console.
2. Remove the 3 screws (1).
3. Pull out the radio assembly slightly in other to gain access to the connectors.
4. Disconnect the wire connectors.
5. Disconnect the coaxial cable from the radio.
6. Remove the radio assembly from the I/P.

Installation Procedure

1. Connect the coaxial cable to the radio.
2. Connect the wire connectors.
3. Push in the radio assembly in the opening in order to install the screws.
4. Install the 3 screws (1). NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the screws to 1.6 N.m (14 Ib in).
5. Install the cluster bezel. Refer to BEZEL REPLACEMENT - INSTRUMENT PANEL (I/P) CLUSTER in Instrument Panel, Gages and Console.
6. Calibrate the new radio assembly.

Important: Do NOT swap digital radio receivers between vehicles. Swapping digital receivers between vehicles will activate the digital radio Theftlock®, and "XM Theftlock®" will display.

1. Remove the right side junction block from the I/P. Refer to INSTRUMENT PANEL ELECTRICAL CENTER OR JUNCTION BLOCK REPLACEMENT - RIGHT in Wiring System. Do not disconnect the electrical connectors.
2. Lower the I/P compartment door to the full open position.
3. From the junction block opening, remove the two retaining screws.
4. Pull the receiver and bracket assembly from the I/P compartment opening.
5. Disconnect the wire connector (1).
6. Disconnect the coaxial cables from the receiver.
7. Remove the receiver and bracket assembly from the I/P.

1. Connect the coaxial cables.
2. Connect the wire connector (1).
3. Install the receiver and bracket assembly to the I/P.
4. Install the two retaining screws. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the screws to 1.6 N.m (14 Ib in).
5. Install the right side junction block to the I/P. Refer to INSTRUMENT PANEL ELECTRICAL CENTER OR JUNCTION BLOCK REPLACEMENT - RIGHT in Wiring System.
6. Close the I/P compartment door.
7. Perform the setup procedure for the digital radio receiver. Refer to «DIGITAL RADIO RECEIVER SETUP»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system__digital-radio-receiver-setup) . Important: After replacement of an XM Radio receiver, call XM Radio to deactivate the receiver that has been removed from the vehicle and activate the new XM Radio receiver. The vehicle must be parked outside in an open area within 24 hours after an activation call.
8. Turn the radio on, tune to the XM channel 0, and record the electronic serial number (ESN) from the radio. The ESN will be needed for activation of the new receiver.
9. Call XM Radio at 1-800-852-XMXM (9696) to deactivate the faulty receiver and activate the new receiver.
10. Park the vehicle outside in an area with an unobstructed view of the southern sky.
11. Leave the vehicle outside with the ignition switch in the ACC position and the radio turned ON for 30 minutes to activate XM service.
12. Once activated the radio will receive the remaining XM Radio channels.

1. If equipped with a Bose® amplifier, remove the radio amp fuse located under the hood electrical center.
2. Remove the floor console bezel. Refer to BEZEL REPLACEMENT - FLOOR CONSOLE (NON-LUXURY UPPER) or BEZEL REPLACEMENT - FLOOR CONSOLE (LUXURY UPPER) or BEZEL REPLACEMENT - FLOOR CONSOLE (NON-LUX LOWER) in Instrument Panel, Gages and Console.
3. Remove the cupholder. Refer to CUPHOLDER REPLACEMENT (NON-LUXURY) or CUPHOLDER REPLACEMENT (LUXURY) or CUPHOLDER REPLACEMENT (REAR) in Instrument Panel, Gages and Console.
4. Remove the bolts (1) retaining the console to the I/P.
5. Remove the console storage bin. Refer to CONSOLE STORAGE BIN REPLACEMENT (EXPECT PRO) in Instrument Panel, Gages and Console.
6. Remove the center console end panel. Refer to CENTER CONSOLE END PANEL REPLACEMENT in Instrument Panel, Gages and Console.
7. Disconnect the audio amplifier electrical connectors.
8. Remove the 4 screws retaining the upper console bracket to the lower console bracket. The front 2 screws (1) are shown in the graphic.
9. Move both front seats to the fully forward.
10. Reposition the inboard seat track trim (1) in order to gain access to the rear console side panel screw (2).
11. Remove both rear console side panel screws.
12. Move both front seats to the fully rearward.
13. Remove both front console side panel screws (1).
14. Disconnect the floor console electrical connector.
15. Remove the console assembly from the vehicle.
16. Remove the audio amplifier screws (1).
17. Remove the audio amplifier from the vehicle.

1. Install the audio amplifier to the floor console lower bracket. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Install the amplifier screws. Tighten Tighten the screws to 3.4 N.m (30 Ib in).
2. Install the floor console.
3. Connect the floor console electrical connector.
4. Install the screws (1) that retaining the upper console bracket to the lower console bracket. Tighten Tighten the retaining screws to 2 N.m (18 Ib in).
5. Install the bolts (1) retaining the console to the I/P. Tighten Tighten the bolts to 4 N.m (35 Ib in).
6. Install both front console side panel screws (1). Tighten Tighten the screws to 2 N.m (18 Ib in).
7. Move both front seats to the fully forward.
8. Install both rear console side panel screws (2). Tighten Tighten the retaining screws to 2 N.m (18 Ib in).
9. Reposition the inboard seat track trim (1).
10. Connect the audio amplifier electrical connectors.
11. Connect the floor console electrical connector.
12. Install the center console end panel. Refer to CENTER CONSOLE END PANEL REPLACEMENT in Instrument Panel, Gages and Console.
13. Install the console storage bin. Refer to CONSOLE STORAGE BIN REPLACEMENT (EXPECT PRO) in Instrument Panel, Gages and Console.
14. Install the cupholder to the console. Refer to CUPHOLDER REPLACEMENT (NON-LUXURY) or CUPHOLDER REPLACEMENT (LUXURY) or CUPHOLDER REPLACEMENT (REAR) in Instrument Panel, Gages and Console.
15. Install the upper console bezel. Refer to BEZEL REPLACEMENT - FLOOR CONSOLE (NON-LUXURY UPPER) or BEZEL REPLACEMENT - FLOOR CONSOLE (LUXURY UPPER) or BEZEL REPLACEMENT - FLOOR CONSOLE (NON-LUX LOWER) in Instrument Panel, Gages and Console.
16. Install the radio amp fuse.
17. If the amplifier has been replaced, perform the audio amplifier set up procedure for the BOSE™ amplifier ONLY. Refer to «AUDIO AMPLIFIER SETUP»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system__audio-amplifier-setup) .

1. Insert a flat bladed tool between the audio control and the console end panel in order to pry gently the audio control from the panel.
2. Disconnect the electrical connectors from the rear seat audio control.

1. Connect the wire connector.
2. Install the rear seat audio control to the console end panel till it clicks in place.
3. Inspect the operation of the rear audio controls.

1. Remove the I/P cluster bezel. Refer to BEZEL REPLACEMENT - INSTRUMENT PANEL (I/P) CLUSTER in Instrument Panel, Gages and Console.
2. Insert a flat bladed tool between the Bezel assembly and the console.
3. Pry the bezel from the console outwards partially in order to gain access to the connectors.
4. Disconnect the electrical connectors.
5. Remove the bezel from the console.
6. Remove the CD player from the console

1. Install the CD player to the console till the tabs locks in place.
2. Place the bezel to the console.
3. Connect the electrical connectors.
4. Install the bezel to the console by pushing on the corners till the retainers clicks in place.
5. Install the I/P cluster bezel. Refer to BEZEL REPLACEMENT - INSTRUMENT PANEL (I/P) CLUSTER in Instrument Panel, Gages and Console.

The radio control module and the radio antenna module cannot be replaced individually.

1. Lower the rear of the headliner. Refer to HEADLINER REPLACEMENT in Interior Trim.
2. Disconnect the electrical connector (2) attached to the rear quarter glass panel.
3. Remove the module (1) bolt.
4. Remove the control module (1) from the roof.
5. Remove the cable (2, 3) from the roof cross member by removing the cable clips (1).
6. Disconnect the electrical connector (2) attached to the rear quarter glass panel (1).
7. Remove the module (3) bolt.
8. Remove the antenna module from the roof.
9. Remove the radio control modules and cable from the vehicle.

1. Install the antenna module (3) to the roof.
2. Install the module bolt. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the bolt to 9 N.m (80 Ib in).
3. Connect the antenna cable to the module (3), if disconnected.
4. Connect the connector (2) to the rear quarter glass panel (1).
5. Install the cable (2, 3) to the roof cross member by pushing in the retainer clips (1).
6. Install the module bolt. Tighten Tighten the bolt to 9 N.m (80 Ib in).
7. Connect the antenna cable to the module (1).
8. Connect the connector (2) to the rear quarter glass panel (3).
9. Install the headliner. Refer to HEADLINER REPLACEMENT in Interior Trim.

1. Remove the I/P trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console.
2. Remove the antenna mast.
3. Remove the outboard section of the cowl vent grille panel.
4. Remove the 3 bolts.
5. Remove the cable grommet from the body.
6. Disconnect the antenna cable from the extension cable.
7. Tie a long wire to the antenna cable.
8. From outside of the vehicle, pull the antenna base and cable assembly until the wire can be easily accessible. Ensure part of the wire is still in the vehicle
9. Remove the wire from the antenna cable.

1. From outside the vehicle, tie the wire to the new antenna cable and base assembly.
2. From inside the vehicle, pull on the long wire until the cable can be connected and grommet seated.
3. Install the cable grommet to the body.
4. Remove the wire and connect the antenna cable to the cable extension.
5. Install the 3 bolts. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the bolts to 5 N.m (44 Ib in). NOTE: Use tape on the tool surface so that you do not damage the paint on the antenna mast.
6. Install the antenna mast. Tighten Tighten the mast to 6 N.m (53 Ib in).
7. Install the outboard section of the cowl vent grille panel.
8. Install the I/P trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console.

Note. Do NOT apply paint or clear coat to the XM band radio antenna. This will damage the function of the antenna, causing poor reception or loss of reception of the XM digital signal.

Note. Use care when removing or installing the headliner. Excessive bending will damage the headliner.

1. Lower the front part of the headliner. Refer to HEADLINER REPLACEMENT in Interior Trim.
2. Disconnect the cables (4) from the antenna base (1).
3. Remove the retaining nut (2).
4. Remove the antenna base (1) from the top of the roof.

1. Place the antenna base (1) to the roof opening.
2. Install the retaining nut (2). NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the nut to 3.5 N.m (30 Ib in).
3. Connect the antenna cables (4).
4. Install the headliner. Refer to HEADLINER REPLACEMENT in Interior Trim.

1. Remove the instrument panel trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console.
2. Disconnect the extension cable from the radio.
3. Disconnect the extension cable from the HVAC duct.
4. Disconnect the extension cable from the antenna.

1. Connect the extension cable to the radio.
2. Connect the extension cable to the HVAC duct.
3. Connect the extension cable to the antenna.
4. Install the instrument panel trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console

1. Remove the I/P trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console.
2. Lower the headliner. Refer to HEADLINER REPLACEMENT in Interior Trim.
3. Loosen the bolt retaining the radio antenna module in order to disconnect the electrical connector.
4. Disconnect the cable (2) from the radio antenna module.
5. Remove the cable clips (1) from the roof.
6. Remove the cable clips (1) from the A-pillar.
7. Disconnect the cable (3) from the radio.
8. Disconnect the electrical wire connector (4).
9. Remove the radio cable from the vehicle.

1. Install the cable clips (1) to the A-pillar.
2. Connect the electrical wire connector (4).
3. Connect the cable (3) to the radio.
4. Install the cable clips (1) to the roof.
5. Connect the cable (2) to the radio antenna module.
6. Connect the wire connector to the radio antenna module.
7. Install the bolt retaining the radio antenna module to the roof. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the retaining bolt to 9 N.m (80 lb in).
8. Install the headliner. Refer to HEADLINER REPLACEMENT in Interior Trim.
9. Install the I/P trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console.

1. Remove the windshield pillar garnish molding. Refer to GARNISH MOLDING REPLACEMENT - WINDSHIELD PILLAR in Interior Trim.
2. Disconnect the XM radio antenna cable (1). NOTE: Use care when removing or installing the headliner. Excessive bending will damage the headliner.
3. Lower the front of the headliner. Refer to HEADLINER REPLACEMENT in Interior Trim.
4. Disconnect the XM antenna cable from the antenna connection above the headliner.
5. Remove the cable clips from the windshield pillar and remove the antenna cable from the vehicle.

1. Install the XM antenna cable and clips to the windshield pillar.
2. Connect the cable to the antenna connection above the headliner.
3. Install the headliner. Refer to HEADLINER REPLACEMENT in Interior Trim.
4. Connect the XM radio antenna cable (1) at the IP.
5. Install the windshield pillar garnish molding. Refer to GARNISH MOLDING REPLACEMENT - WINDSHIELD PILLAR in Interior Trim.

1. Remove the upper trim panel from the instrument panel (I/P). Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console.
2. Disconnect the digital radio antenna cable (1).
3. Fully open the I/P storage compartment in order to access the digital receiver (3).
4. Disconnect the antenna cable (2) from the digital receiver (3).
5. Disengage the antenna cable clips (4, 6) from the I/P.
6. Remove the digital radio antenna extension cable (5).

1. Install the digital radio extension cable (5) to the I/P.
2. Engage the antenna cable clips (4, 6) to the I/P.
3. Connect the antenna cable (2) to the digital receiver (3).
4. Connect the digital radio antenna extension cable to the digital radio antenna cable (1).
5. Install the I/P upper trim panel. Refer to TRIM PANEL REPLACEMENT - INSTRUMENT PANEL (I/P) UPPER in Instrument Panel, Gages and Console.
6. Close the I/P storage compartment.

1. Remove the 2 front seats. Refer to SEAT REPLACEMENT - FRONT BUCKET in Seats.
2. Move the center console rearward slightly in order to disconnect the wire connector.
3. Move the console rearward to gain access to the subwoofer speaker.
4. Remove the 4 retaining bolts from the speaker.
5. Disconnect the wire connector.
6. Remove the speaker from the subwoofer assembly.

1. Install the speaker into the subwoofer assembly.
2. Connect the wire connector.
3. Install the 4 retaining screws. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Ensure the screw follows the same thread in the screw boss so that a new thread is not formed. Tighten Tighten the screws to 6 N.m (53 lb in).
4. Move the console forward in order to connect the wire connector.
5. Install the console to the I/P. Refer to CONSOLE REPLACEMENT (WITH CONSOLE MOUNTING BRACKET) or CONSOLE REPLACEMENT (W/O CONSOLE MOUNTING BRACKET) in Instrument Panel, Gages and Console.
6. Install the 2 front seats. Refer to SEAT REPLACEMENT - FRONT BUCKET in Seats.

1. Remove the windshield garnish molding (2). Refer to GARNISH MOLDING REPLACEMENT - WINDSHIELD PILLAR .
2. Disconnect the electrical connector (3) to the speaker.
3. Remove the speaker (1) by press until it is out of the molding.

1. Press in the speaker (1) until it is fully seated.
2. Connect the electrical connector (3).
3. Install the windshield garnish molding (2). Refer to GARNISH MOLDING REPLACEMENT - WINDSHIELD PILLAR .

1. Remove the trim panel. Refer to TRIM PANEL REPLACEMENT - SIDE FRONT DOOR in Doors.
2. Remove the speaker by pushing down on the top retainer.
3. Disconnect the electrical connector.

1. Connect the electrical connector.
2. Install the speaker. Push the speaker into place. Ensure that the speaker is completely seated.
3. Install the trim panel. Refer to TRIM PANEL REPLACEMENT - SIDE FRONT DOOR in Doors.
4. Inspect the component operation.

1. Remove the front door trim panel (1). Refer to TRIM PANEL REPLACEMENT - SIDE FRONT DOOR in Doors.
2. Remove the speaker grill. Refer to «SPEAKER GRILLE REPLACEMENT - FRONT DOOR»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) .
3. Remove the fasteners (2).
4. Remove the speaker from the door trim panel (1).

1. Position the speaker into the opening in the door trim panel (1).
2. Install the fasteners (2). NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten to 1.6 N.m (14 lb in).
3. Install the speaker grill. Refer to «SPEAKER GRILLE REPLACEMENT - FRONT DOOR»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) .
4. Install the front door trim panel. Refer to TRIM PANEL REPLACEMENT - SIDE FRONT DOOR in Doors.

1. Remove the garnish molding. Refer to GARNISH MOLDING REPLACEMENT - REAR UPPER (AVALANCHE / ESCALADE EXT) or GARNISH MOLDING REPLACEMENT - REAR UPPER (TAHOE / YUKON / ESCALADE / SUBURBAN) in Interior Trim.
2. Remove the garnish molding. Refer to GARNISH MOLDING REPLACEMENT - REAR CORNER in Interior Trim.
3. Remove the speaker.
4. Disconnect the electrical connectors, as necessary.

1. Connect the electrical connectors, as necessary.
2. Install the speaker.
3. Install the garnish molding. Refer to GARNISH MOLDING REPLACEMENT - REAR CORNER in Interior Trim.
4. Install the garnish molding. Refer to GARNISH MOLDING REPLACEMENT - REAR UPPER (AVALANCHE / ESCALADE EXT) or GARNISH MOLDING REPLACEMENT - REAR UPPER (TAHOE / YUKON / ESCALADE / SUBURBAN) in Interior Trim.
5. Verify the component's operation.

1. Remove the door trim panel. Refer to TRIM PANEL REPLACEMENT - SIDE REAR DOOR (TAHOE/YUKON/ESCALADE) or TRIM PANEL REPLACEMENT - SIDE REAR DOOR (SUBURBAN/YUKON XL/AVALANCHE/ESCLD EXT) in Doors.
2. Remove the screws (1) retaining the speaker to the mounting bracket.
3. Disconnect the electrical connector from the speaker.
4. Remove the speaker from the mounting bracket.
5. Remove the bolts (2) retaining the speaker mounting bracket to the door, if required.
6. Remove the speaker mounting bracket.

1. Install the speaker mounting bracket.
2. Install the bolts (2) retaining the speaker mounting bracket to the door, if removed. NOTE: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems. Tighten Tighten the bolts to 6 N.m (53 lb in).
3. Install the speaker to the mounting bracket.
4. Connect the electrical connector to the speaker.
5. Install the screws (1) that retain the speaker to the mounting bracket. Tighten Tighten the screws to 2 N.m (53 lb in).
6. Install the door trim panel. Refer to TRIM PANEL REPLACEMENT - SIDE REAR DOOR (TAHOE/YUKON/ESCALADE) or TRIM PANEL REPLACEMENT - SIDE REAR DOOR (SUBURBAN/YUKON XL/AVALANCHE/ESCLD EXT) in Doors.
7. Verify the component operation.

1. Remove the front door trim panel (1). Refer to TRIM PANEL REPLACEMENT - SIDE FRONT DOOR in Doors.
2. Straighten the retaining tabs (2) on the back of the door trim panel (1).
3. Remove the grille from the front of the door trim panel.

1. Align the retaining tabs (2) on the speaker grille to the corresponding slots in the door trim panel.
2. Push the speaker grille into the door trim panel (1).
3. Bend the retaining tabs (2) over to secure the speaker grille to the door trim panel (1).
4. Install the front door trim panel. Refer to TRIM PANEL REPLACEMENT - SIDE FRONT DOOR in Doors.

Tools Required

J 38778 Door Trim Pad Clip Remover

Important: Components of the DVD player cannot be serviced separately. Replace as an assembly.

1. Move the screen to the open position.
2. Remove the rear screw cover using a flat bladed tool.
3. Remove the four retaining bolts (2).
4. Insert the J 38778 between the headliner and the DVD player assembly.
5. With 1 hand holding the DVD player assembly, pry the retainer from the bracket.
6. Allow the DVD player assembly to come to rest on the hook. Important: Observe the routing of the wiring harness (2).
7. Disconnect the wire connector (1).
8. Slightly lift up the DVD player assembly so that the hook can be removed from its resting position.
9. Remove the DVD player from the vehicle.

1. Install the DVD player hook (1) into the hook opening.
2. Connect the wire connector (1) to the DVD player assembly. Important: Ensure the harness is routed to the right side of the large plastic pin as shown (2).
3. Install the harness retainer to the panel.
4. Swing the rear part of the assembly to the headliner so that the retainer is seated.
5. Install the two rear retaining bolts. Tighten Tighten the 2 rear retaining bolts to 9 N.m (80 lb in).
6. Move the screen to the open position.
7. Install the 2 front retaining bolts (2). Tighten Tighten the 2 front retaining bolts to 9 N.m (80 lb in).
8. Install the rear screw cover.

Radio/Audio System Description and Operation

The Entertainment System on this vehicle is configured with a radio, antenna, and speakers.

The following list shows the radios available for this vehicle

1. Radio (UM7) - AM/FM with Cassette
2. Radio (UBO) - AM/FM with CD
3. Radio (UB1) - AM/FM, Cassette and CD
4. Radio (UC6) - AM/FM, Integral Multi Disc CD Changer
5. Navigation Radio (UM8)- RADIO - AM/FM Stereo, Seek/Scan, CD, ETR, Navigation, Clock

Scheme 107

Scheme 108

Scheme 109

Scheme 110

Scheme 111

Each item in the list below represents topics covered in detail below.

1. AM/FM Reception
2. Diversity Antenna System
3. Audio Amplifier
4. Theft Deterrent
5. Integral Multi Disc CD Changer (IMDX)
6. Remote Playback Device
7. Radio Data System (RDS)
8. Tape/CD Player Error Messages
9. Rear Seat Audio (RSA)
10. XM Satellite Radio

Radio Signal

The radio signal is sent from a broadcast station and is then received by an antenna. The strength of the signal received depends on the following

1. The power output (wattage) of the broadcasting station
2. The location of the vehicle (or receiver) relative to the broadcast tower.
3. Obstacles between the tower and the receiver
4. Atmospheric conditions
5. What band (AM or FM) the station is broadcasting
6. Type of antenna and the ground plane

AM Reception

The AM band has a lower frequency range than the FM band. These longer wavelengths

1. Bend around Obstacles
2. Follow the curvature of the earth
3. May reflect off the ionosphere (skip)

The AM frequencies have longer range due to the ground wave. The ground wave follows the curvature of the earth and is effected by its conductivity. Greater conductivity equates to less signal loss thus transmission over water is better than over land. The AM band has a range of 80-320 km (50-200 mi).

FM Reception

The shorter wavelengths of the higher frequency FM band

1. Reflect off obstacles
2. Are absorbed by the ground
3. Penetrate the ionosphere

Broadcasts in the FM band are limited to "line of sight" reception which is typically 40 km (25 mi). Even when out of a direct line of sight, the signal may be reflected into areas that would be in a "shadow" otherwise. Factors which affect the line of sight include

1. Height of the broadcast antenna
2. Height of the receiving antenna
3. Terrain and buildings in the broadcast path

Important: This diversity antenna system is comprised of 3 glass mounted antennas, a radio antenna module, and an FM impedance matching module. The primary AM and FM antennas are an integral part of the left rear quarter glass and are connected to the radio antenna module. The secondary FM antenna is an integral part of the right rear quarter glass and is connected to the FM impedance matching module. The radio antenna module processes the antenna reception signals and phase aligns them to create one strong signal. The FM impedance matching module boosts the secondary antenna signal and transmits it to the radio antenna module.

The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition. If the test leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement. If the test leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement.

Perform the Antenna System Test and test the antenna coax cable prior to performing any of the following tests.

1. The radio antenna module is not grounded properly. The module grounding screws should be clean and tight. The antenna module ground is either a chassis ground or a ground strap. Measure the resistance from the antenna module base plate to a good ground. Resistance should be 0.20 ohms or less. Find and correct the condition if the resistance is out of specification.
2. The antenna enable signal is not present at the radio antenna module. This could be caused by an output failure of the radio or an open/shorted antenna enable signal circuit. In order to test the antenna enable signal circuit, the radio must be ON and tuned to the FM band. Disconnect the radio antenna module. Measure the voltage from the antenna enable signal circuit of the radio antenna module to a good ground. Voltage measured should be near 12 volts. If the specified voltage is measured, test the antenna enable signal circuit for an open or short to ground. If no failures were found, replace the radio. Refer to «RADIO REPLACEMENT»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) for service procedure.
3. The FM composite signal circuit to the radio antenna module is open or shorted to ground. Test the FM composite signal circuit for an open or short to ground.
4. The feed coax at the radio antenna module has been inadvertently swapped with the FM impedance matching module crossover coax. Ensure that the feed coax, marked with a yellow band, is in the correct socket on the radio antenna.
5. Improper retention of the antenna cable in the floating retainer. Poor or no connection with the radio will result when the radio is installed if the antenna cable is not properly attached in the floating retainer. Inspect the antenna cable for movement in the floating retainer. Replace the antenna cable if movement is found.
6. Defective radio antenna module. Replace radio antenna module. Refer to «MODULE REPLACEMENT - RADIO ANTENNA DIVERSITY»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) for service procedure.

1. Defective AM antenna.
2. Defective radio antenna module. Replace radio antenna module. Refer to «MODULE REPLACEMENT - RADIO ANTENNA DIVERSITY»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) for service procedure.

1. Defective primary or secondary FM antenna
2. Defective radio antenna module. Replace radio antenna module. Refer to «MODULE REPLACEMENT - RADIO ANTENNA DIVERSITY»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) for service procedure.
3. Defective FM impedance matching module. Replace FM impedance matching module. Refer to «MODULE REPLACEMENT - RADIO ANTENNA DIVERSITY»(/chevrolet/avalanche/i-2001-2006/remont/entertainment-systems/#entertainment-system) for service procedure.

Audio Amplifier

The audio amplifier is standard on some vehicle lines but is optional on most. The radio supplies low level audio signals to the audio amplifier in order to boost the signal sent to the speakers. The class 2 signal circuit allows the radio to recognize that an amplifier is present. Once the radio detects an audio amplifier, it will output low level audio signals. The audio amplifier is turned on when it receives a message via the class 2 serial data circuit indicating that the radio is on.

Theft Deterrent

The theft deterrent system is a feature on all base and uplevel radios. There is no need to program a security code into the radio as in past model years. The theft deterrent system now utilizes class 2 serial data to determine if the radio is in the appropriate vehicle. Each time the radio receives the "run" power mode message, it compares the VIN information it has stored to the VIN information received from a module on the class 2 serial data circuit responsible for transmitting that information. If a mis-match occurs, the radio display will indicate to the user the radio is locked. Once this takes place, a DTC will set, the radio will not respond to any button presses and become inoperative. The two scenarios able to cause this condition are

1. A radio is installed from another vehicle.
2. A module which communicates on the class 2 serial data circuit which supplies VIN information to the radio is replaced and not properly setup with the correct VIN information for that vehicle.

The only way to unlock the radio is by using a scan tool. Always refer to the table in this section to diagnose the "Theftlock" DTC for further information.

Integral Multi Disc CD Changer (IMDX)

The Integral Multi Disc CD Changer has the capability of storing and playing up to six (6) compact discs. The Integral Multi Disc CD Changer has a shock-absorbing system. Only under extreme operating temperatures or severe shock or vibration should the compact disc player skip or mute. If the customer travels an abnormally rough road, a skip condition may be normal. Test drive the vehicle on a normal road with a known good CD. If the condition is still present, replace the radio.

The use of CD lens cleaner discs is not advised, due to the risk of contaminating the lens of the CD optics with lubricants internal to the CD mechanism.

To operate the Integral Multi Disc CD Changer in the single play mode, depress the "LOAD" button for less than 2 seconds, an audible "beep" can then be heard. When the disc door opens the LED to the right of the disc door will first turn red then green to indicate the CD can be loaded. The radio will also display the message "INSERT CD 1" and the changer will pull the disc into the play position. To operate the changer in the multi disc mode, depress the "MODE" button for more than two seconds and the LED to the right of the disc door will first turn red then green to indicate CDs can be loaded. The radio will also display the message "MULTI LOAD" to indicate the multi load mode has been initiated and the changer will begin accepting a disc for however many empty slots there may be. If eight seconds elapse before the next disc is loaded, the multi load mode is cancelled and can be re-intiated if desired by depressing the load button again for more than 2 seconds. If the changer is full, (six discs are loaded) the single play and multi load modes cannot be executed. When this occurs, three audible beeps are heard and the message "CHANGER FULL" is displayed.

Remote Playback Device

The remote playback device is either installed at the factory or in some instances it is dealer installed. There are three types of remote playback devices, a multi disc remote CD changer, a single disc CD player and a cassette player. All three devices have a wiring harness which plugs into the back of the radio. The radio controls and communicates with the remote playback device through a Entertainment and Comfort (E&C) or Class 2 communication circuit.

Remote CD Changer (CDX)

The remote CD changer allows for multiple compact disks to be played continuously without having to manually change compact discs. Normal size discs may be played using the slots supplied in the magazine. The magazine must first be loaded with discs before it can played. To load CD's, insert the CD's from bottom to top, placing the discs in the magazine label side up. If a disc is loaded label side down, the disc will not play and an error will occur. Care should be used to align and insert the disc into one disc tray only. Repeat this procedure for loading all of the discs in the magazine. Once the discs are loaded into the magazine, push the magazine into the changer in the direction of the arrow marked on the magazine. When the CD magazine is loaded, the changer will begin checking for discs in the magazine. This will continue for up to one and a half minutes, depending on the number of discs loaded. To eject the magazine from the player, push the CD changer door. The door will open. Then press the eject button. NOTICE: If the CD magazine fails to eject after the EJECT button has been pressed, do not attempt to pry the magazine from the CD changer. Whenever a CD magazine with discs is loaded in the changer, the CD changer symbol will appear on the radio display. If the CD changer is checking the magazine for CD's, the CD symbol will flash on the display until the changer is ready to play.

Radio Data System (RDS)

All uplevel audio systems are equipped with technology known as the Radio Data System (RDS). RDS is a system that sends data along with the audio of the FM station you are currently tuned to. RDS is a standard that defines how a FM broadcast station may send digital data along with the audio program. Think of it as a one way wireless modern, allowing the broadcaster to send information about his program to your receiver.

RDS data is carried in what is known as a "sub-carrier". A sub-carrier is a frequency that the FM broadcaster is authorized to use to send data or other audio programs that are not audible in the main audio program. RDS information can be used to display program information and to control the radio.

To receive the RDS signal, all that is needed is an FM receiver with a RDS circuit. A special integrated circuit capable of dealing with the RDS signal is in the RDS circuit and passes it along to the receiver's microprocessor where it is decoded and acted upon.

RDS Basic Information

RDS basic information

1. RDS functions are provided in the FM broadcast band only.
2. RDS functions will only work with FM broadcast stations that are broadcasting RDS data.
3. Not all FM Broadcast stations broadcast RDS data or offer all of the RDS services.
4. RDS functions may not work properly when reception is weak, reception is of poor quality, or RDS is not implemented properly by the FM Broadcaster.

In some cases, a radio station broadcasting incorrect information may cause the RDS features of the radio to appear to work improperly.

Broadcast RDS information can be used in a variety of ways by the receiver and listener, but basically falls into two categories: Display and Control.

Displaying Program Information

RDS displays textual information such as

1. The name of the station.
2. The type of program.
3. General information such as artist and song title, call in phone numbers, etc.

RDS is always on. When tuned to a non-RDS station, your radio will display frequency information as you would normally expect. When tuned to a RDS station, your radio will change from displaying the frequency of the FM station to displaying the call letters of the station or display the nickname of the station. This feature is known as the Program Service Name.

Controlling the Radio

RDS can control the radio when data the receiver can use responds to timely information performing the following

1. Interrupt the playback of your cassette or CD for traffic or emergency bulletins.
2. Search for stations by type of program.
3. Automatically follow network programming from transmitter to transmitter as you travel from one listening area to another.
4. Set your clock to the time that the RDS Broadcast station broadcasts.

Viewing and Selecting RDS Information for Display

Press the "TUNE SELECT PUSH RCL" knob once for less then 2 seconds when the radio displays the program service name and the frequency of the station will be displayed. Press the knob again, and the program type (P-Type) will be displayed. Pressed again, and the program type name will be displayed (if the broadcaster is broadcasting one). The program type name is an eight-character name that the broadcaster may use to further identify the type of programming currently being broadcast. Should you decide that Frequency, P-Type or program type name is more desirable to display when tuned to an RDS station than the Program Service Name, press the "TUNE SELECT PUSH RCL" knob until the desired information is displayed, then press and hold for more than 2 seconds. A beep should be heard and the radio will now display the selected information whenever tuned to an RDS broadcaster. The radio will display frequency for all non-RDS broadcast stations.

Using the RDS Traffic Feature

Some RDS broadcasters may carry traffic information programming to inform you of current traffic conditions in your listening area and is indicated by the icon in the radio display. RDS enables the broadcaster to get this information to you even when you are listening to a tape or compact disc. This feature can be enabled or disabled by the listener. Press the "TRAF" button to find a station that claims to carry traffic information. You may do this even when playing a cassette tape or compact disc. This action will operate in the background without interrupting the current playback. If the radio is not currently tuned to an RDS traffic station, the radio will immediately SEEK an RDS traffic station. If the radio finds an RDS traffic station, the "TRAF" icon will appear in the radio display as will brackets around the (TRAF) icon. If the radio cannot find an RDS traffic station after searching through the entire FM band, the radio will display "NO TRAFFIC".

Alternate Frequency (AF) Switching

RDS permits broadcaster's to send information to the radio that allows the radio to automatically switch frequency to the best quality station in that broadcaster's network.

Since the radio is displaying the broadcaster call letters or nickname, the listener will not see the frequency during an AF switch unless you have changed the default display to be frequency instead of Program Service name.

To enable or disable AF switching perform the following

1. Press and hold the AM/FM button for two seconds or more.
2. The radio will display AF ON or AF OFF depending on the current condition of AF and a confirmation beep will be heard.

When AF is enabled and you recall a RDS station stored on preset, the radio determines if the station stored is of acceptable quality. If not, the radio checks all available AF's for your station. If the radio fails to locate your program, AF SEARCH will be displayed as the radio scans across the band looking for your program or an affiliated network. If the radio cannot find the original station or an acceptable alternate frequency NOT FOUND will be displayed and the radio returns to the original frequency for the preset.

RDS Clock Time

Broadcasters can choose to send clock time information in the RDS data. This information can be used to update the clock time on the radio. RDS clock time is broadcast once a minute. To set the clock using RDS clock data perform the following

1. Press and hold the HR and MIN buttons together for two or more seconds to update the time.
2. The display will show UPDATED after receiving the broadcast time data.
3. If the broadcaster is not broadcasting the time data, the radio will display NO UPDATE and the time remains unchanged.

Radio Error Messages

The radio displays the following error messages

CDX ERR: Displays if communication is lost with the remote CD changer, If equipped.

CHECK CD: Displays when the player encounters a focus or tracking error.

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 1 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 a half of a second, all of the messages will be deleted.

Rear Seat Audio (RSA)

The audio portion of the rear seat audio 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 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 childrens 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.

Scheme 112

The rear seat entertainment (RSE) system augments the vehicle's in-dash audio system with

1. A Digital Versatile Disc (DVD) player
2. A video display screen
3. Two sets of wireless infrared headphones
4. A remote control and
5. Stereo audio and video inputs in the overhead console for playing an auxiliary device

DVD Player

The DVD player and the video display screen are located in the overhead console. The DVD player can be controlled by both the buttons on the DVD player and by the buttons on the remote control. The DVD player power may be turned on when the ignition is in the run, accessory, or retained accessory power (RAP) power modes. DVDs are manufactured with different region codes based on the country in which they are sold. Therefore, the RSE system DVD player is only compatible with the region code where the vehicle is sold. The DVD region code is printed on the jacket of most DVDs. The DVD player will also play audio CDs. Home recorded CDs, CD-R or CD-RW formats, will not play in this DVD player.

DVD Player Buttons

The following buttons operate the DVD player.

Eject: Press this button to eject the DVD or CD media.

Enter: Press this button to select items within a menu.

Menu Navigation: Use the arrow keys to navigate through a menu. The up arrow will skip to the next chapter or track; the down arrow acts as a previous chapter or track access key; the right arrow acts as fast forward, and the left arrow acts as rewind.

Menu: Press this button to access the DVD menu. This button does not operate with media other than DVD.

Display Menu: Press this button to modify the video screen display characteristics.

Play / Pause: Press this button to turn the DVD player on to play media, pause media, and to toggle between play and pause of media.

Stop: Press this button to stop play of media in the DVD player.

Source: Press this button to toggle between DVD player and auxiliary source.

Power: Press this button to turn the RSE system power On or Off.

Playing a Disc

To play a disc, gently insert the disc with the label side up, into the loading slot. The DVD player will continue to load the disc and the player will automatically start if the vehicle ignition is in an enabled power mode. If a disc is already in the player, press the play/pause button on the face of the DVD player or on the remote control. Some DVDs will not allow the user to fast forward or skip the copyright or previews. Some DVDs will automatically begin to play after the previews have finished. If the DVD does not begin to play the main title, refer to the on-screen instructions, and press play on the DVD player buttons or on the remote control.

Stopping and Resuming Play

To stop a disc, press and release the stop/eject button on the DVD player or the remote control. To resume playback, press the play/pause button on the DVD player or the remote control. The movie should resume play from where it was stopped. If the disc has been ejected, or if the stop button has been pressed 2 times, the disc will resume play at the beginning of the main title.

Ejecting the Disc

Press the eject button on the DVD player to eject the disc.

If a disc is ejected from the DVD player but is not removed, the DVD player will reload the disc within 25 to 30 seconds. The disc will then be stored in the DVD player. The DVD player will not resume play of this disc automatically upon its reload.

DVD Messages

The following errors may be displayed on the video screen monitor.

Disc Format Error: This message will be displayed if a disc is inserted upside down, the disc is not able to be read, or if the disc format is not compatible with the DVD player.

Load / Eject Error: This message will be displayed if the disc is not able to properly load or eject.

Disc Play Error: This message will be displayed if the DVD player cannot play the disc. Severely damaged discs will cause this error.

Region Code Error: This message will be displayed if the region code of the DVD media is not compatible with the DVD player.

No Disc: This message will be displayed if the play button is pressed and there is no disc in the DVD player.

Scheme 113

Parental Control Button

This button is located on the forward part of the DVD console, near the driver of the vehicle. Press this button while media is playing in the DVD player to freeze the video and mute the audio. The video screen will display the message Parental Control ON and the power indicator light on the DVD player will flash at one-second intervals. While in this mode, all other button operations from the remote control and the DVD player, with the exception of the eject function, will be disabled. The driver will then be able to gain the attention of the rear seat passengers. Press this button again to restore normal operation of the DVD player. This button may also be used to turn the DVD power on and automatically resume play of the media within the DVD player if the vehicle is in an enabled power mode.

Video Screen

To use the video screen, push forward on the release latch and the screen will be free to rotate down. Adjust the screen's position as desired. The display menu button will allow different screen display modes, such as normal, full screen, zoom or cinema. When the video screen is not in use, push it up into its latched position.

The DVD player and video screen will continue to operate when the screen is in either the up (closed) or down (viewing) position. The video screen contains the infrared transmitters for the wireless headphones as well as the infrared receiver for the remote control. Therefore, if the screen is in the closed position the infrared signals will not be available for the operation of the headphones and the remote control.

Avoid directly touching the video screen, as damage may occur.

Remote Control

To use the remote control, aim it at the infrared window below the video screen and press the desired remote control button. Direct sunlight or very bright light may affect the ability of the entertainment system to receive signals from the remote control. If the remote control does not seem to be working, the batteries may need to be replaced. Objects blocking the line of sight may affect the function of the remote control.

Remote Control Buttons

DVD Player Power On / Off: Press this button to turn the RSE system power On or Off.

RSERC Illumination: Press this button to turn the remote control backlight ON.

Title: Press this button to return the DVD media to the root menu of the DVD.

Menu: Press this button to access the DVD menu. This button does not operate with media other than DVD.

Display Menu: Press this button to modify the video screen display characteristics.

Return: The return button shall operate only when a DVD is being played and a menu is active. The return function allows the user to exit the current active menu and return to the previous superior menu.

Enter: Press this button to select items within a menu.

Audio: Pressing this button shall call-up a menu that shall operate only when a DVD is being played. The format and content of this function is defined by the disc and is dependent on the disc.

Angle: Pressing this button shall call-up a menu that shall operate only when a DVD is being played. The format and content of this function is defined by the disc and is dependent on the disc.

Subtitle: Pressing this button shall call-up a menu that shall operate only when a DVD is being played. The format and content of this function is defined by the disc and is dependent on the disc.

Source: Press this button to toggle between DVD player and auxiliary source.

Fast Forward: Press this button to fast forward the DVD in 5x speed. To stop fast forwarding, press this button again. This button may not work when the DVD is playing the copyright or the preview.

Fast Reverse: Press this button to fast rewind the DVD in 5x speed. To stop fast rewinding, press this button again. This button may not work when the DVD is playing the copyright or the preview.

Previous Track/Chapter: Press this button to return to the start of the current track/chapter. Press this button again to backup to the previous track/chapter. This button may not work when the DVD is playing the copyright material.

Next Track/Chapter: Press this button to advance to the beginning of the next track/chapter. The button may not work when the DVD is playing copyright material.

Stop: Press this button to stop play of media in the DVD player

Play / Pause: Press this button to turn the DVD player on, to play media, to pause media, and to toggle between play and pause of media.

Cancel: Pressing this button within 3 seconds of inputting a numeric selection shall clear all numeric inputs.

Numeric Keypad: The RSERC numeric keypad shall provide the operator with the capability of direct chapter / title / track number selection.

Menu Navigation: Use the arrow keys to navigate through a menu. The up arrow will skip to the next chapter or track; the down arrow acts as a previous chapter or track access key; the right arrow acts as fast forward, and the left arrow acts as rewind.

Battery Replacement

To change the batteries, do the following

1. Remove the battery compartment door located on the bottom of the remote control.
2. Remove the batteries from the compartment.
3. Replace the 2 AA-size batteries in the proper orientation.

If the remote control is to be stored for a long period of time, remove the batteries and keep them in a cool, dry place. Do not store the remote control in heat or direct sunlight. This could damage the remote control and would not be covered by your vehicle warranty. Keep the remote control stored in a cool, dry place.

Wireless Headphones

The RSE system includes 2 sets of wireless infrared headphones.

Each set of headphones has an ON/OFF control. To use the headphones activate the ON/OFF control. A red indicator light will illuminate on the headphones. If the light does not illuminate, the batteries may need to be replaced. See Battery Replacement in this section for more information. To turn the headphones OFF activate the ON/OFF control once again.

Each set of headphones has a rotary volume control. To adjust the volume, adjust this control. The headphones will automatically turn OFF if they lose the infrared signal from the system for approximately 4 minutes in order to preserve their battery power. The signal may be lost if the system is turned off or if the headphones are out of range of the infrared signal transmitters that are located below the video display screen.

To change the batteries, do the following

1. Loosen the screw on the battery compartment door located on the LEFT headphone earpiece.
2. Remove the batteries from the compartment.
3. Replace the 2 AAA-size batteries in the proper orientation.

If the headphones are to be stored for a long period of time, remove the batteries and keep them in a cool, dry place. Do not store the headphones in heat or direct sunlight. This could damage the headphones and would not be covered by your vehicle warranty. Keep the headphones stored in a cool, dry place.

Stereo RCA Jacks

The RCA jacks are located on the forward portion of the overhead console next to the parental control button. The RCA jacks allow you to connect audio and video from an auxiliary device such as a camcorder or a video game player to your RSE system just as you would to a standard television. Standard RCA cables are needed to connect the auxiliary device to the RCA jacks. The yellow connector transmits video while the red and white connectors transmit right and left stereo audio respectively. Please refer to the manufacturer's instructions for proper connection of your auxiliary device.

To use the auxiliary inputs on the RSE system, connect an external auxiliary device to the color-coded RCA jacks and turn both the auxiliary device and the RSE system power on. If the RSE system had been previously in the DVD player mode, the user will need to press the SRCE button on the faceplate or remote control to change to the auxiliary mode. Successive actuations of the SRCE button will toggle the RSE system between the auxiliary and DVD player modes.

Audio Output

Audio from the RSE system DVD player or auxiliary inputs may be heard through the following possible sources

1. Wireless infrared headphones
2. Vehicle speakers
3. Vehicle wired headphone jacks on rear seat audio controller (if equipped)

The RSE system will always transmit the audio signal by infrared to the wireless headphones, if there is audio available. The RSE system is capable of outputting audio to the vehicle speakers by pressing the CD button on the vehicle's radio. The RSE system may be selected as an audio source on the radio if the RSE system power is on. Once the RSE system is selected as an audio source on the radio you may adjust the speaker volume on the radio to control the volume of the audio to the speakers. If the RSE system power is not on, the RSE system will not be an available source on the radio head unit. Please refer to the operating instructions for the vehicle radio for more information on its operation.

The RSE system is capable of outputting audio to the wired headphone jacks on the rear seat audio controller if the vehicle is so equipped. The RSE system may be selected as an audio source on the Rear Seat Audio controller if the RSE system power is on. Please refer to the operating instructions for the Rear Seat Audio Controller for more information on its operation.

Scheme 114

See also:
• DIAGNOSTIC SYSTEM CHECK - ENTERTAINMENT SYSTEM
• RADIO/AUDIO SYSTEM DESCRIPTION AND OPERATION
• RADIO POOR RECEPTION
• SPEAKERS INOPERATIVE - ONE OR MORE
• AUDIO SYSTEM TROUBLESHOOTING HINTS
• AUDIO AMPLIFIER SETUP
• DIGITAL RADIO RECEIVER SETUP