Intermittant Problem With Sound

[pcgeary1973]

Hey guys anyone want to help figure this out. I have a 2007 NBS Z71 ext cab with Bose & factory Nav. When I first got the truck the onstar antenna needed to be replaced. The dealer did that and the next day. I went to mute the stereo and it wouldn't mute or change stations so I turned off the thing and lo and behold with the radio off it begins to play music. I have gone to the dealer who says no codes showed up. It has never happened again. Now on occasion there will be a crackling sound heard through the speakers and then no sound (music)for a few seconds then sound (music) reappears. Dealer cannot find problem. I first thought that it was due to onstar antenna replaced but this happens whether I am listening to FM,XM or CD. Dealer has rechecked antenna connection and nothing found. Now for two weeks it hasn't done this and last night. I heard it again, this time it happened when I was closing the rear automatic window. Most likely coincidence. Dealer has offered to replace the nav system however, they tell me it would be refurbished. I bought a new truck not a used one. Why should I have to settle for a refurbished nav system that may not resolve the issue. If it does not, I have now swapped out a new nav for a used one. Any help guys?

[rossn2]

Do you store a cell phone near the radio area?

Have had static-wierd radio noises from a cell phone being located too close to them...don't know why either...

 

Hey guys anyone want to help figure this out. I have a 2007 NBS Z71 ext cab with Bose & factory Nav. When I first got the truck the onstar antenna needed to be replaced. The dealer did that and the next day. I went to mute the stereo and it wouldn't mute or change stations so I turned off the thing and lo and behold with the radio off it begins to play music. I have gone to the dealer who says no codes showed up. It has never happened again. Now on occasion there will be a crackling sound heard through the speakers and then no sound (music)for a few seconds then sound (music) reappears. Dealer cannot find problem. I first thought that it was due to onstar antenna replaced but this happens whether I am listening to FM,XM or CD. Dealer has rechecked antenna connection and nothing found. Now for two weeks it hasn't done this and last night. I heard it again, this time it happened when I was closing the rear automatic window. Most likely coincidence. Dealer has offered to replace the nav system however, they tell me it would be refurbished. I bought a new truck not a used one. Why should I have to settle for a refurbished nav system that may not resolve the issue. If it does not, I have now swapped out a new nav for a used one. Any help guys?

[jrrod2004]

Sorry to hear the problems but this might help:

 

 

Document ID# 1984980

Subject:Audio Whine Noise from Radio Speakers When Using OnStar (Install Noise Suppression Filter) #07-08-46-002 - (06/06/2007)

Models:2007-2008 GM Passenger Cars and Trucks (Including Saturn)

 

 

2007-2008 HUMMER H2, H3

 

 

2007-2008 Saab 9-7X

 

 

with OnStar (RPO UE1)

 

 

Condition

Some customers may comment on an audio whine coming from the radio speakers when using the OnStar® system. The amplitude and frequency of the whine will change with an increase or decrease in engine speed.

 

Cause

This condition may be caused by electrical noise on the OnStar® Vehicle Communication Interface Module (VCIM) battery feed wire being passed to the microphone output pins at the radio.

 

Correction

Technicians are to install a noise suppression filter, P/N 1224205, inline in the OnStar® battery voltage circuit a few centimeters (inches) from the VCIM. The feed circuit wire is red/white and is located in cavity 15 of connector C1 of the VCIM. Connector C1 is a 16 cavity natural colored connector. The filter package has a yellow and a black wire at one end and a single yellow wire at the opposite end. Install the side with the two wires toward the "INFO" fuse (away from the VCIM), installing the yellow wire in circuit 3240 and the black wire to ground. Then install the single yellow wire end towards the VCIM.

 

Important: The noise suppression filter is polarity sensitive. The filter is designed to be most effective when the end with the capacitor ground is connected towards the source of the electrical noise. Install the filter in this polarity first. If the noise level is still not satisfactory, try disconnecting the capacitor ground. In some cases if the first installation does not correct the noise, try reversing the filter polarity (removing the filter, turning it end for end and then reinstalling it) and grounding the capacitor lead.

 

Parts Information

Part Number

 

Description

 

Qty

 

1224205

 

Filter, Universal Alternator Whine

 

1

 

Warranty Information (excluding Saab U.S. Models)

For vehicles repaired under warranty, use:

 

Labor Operation

 

Description

 

Labor Time

 

N6632

 

Wiring And/Or Connector-Vehicle Entertainment - Repair Or Replace

 

Use Published Labor Operation Time

 

Warranty Information (Saab U.S. Models)

Labor Operation

 

Description

 

Failed Object

 

Fault/Reason Code

 

Location Code

 

Warranty Type

 

Repair/Action Code

 

Labor Time

 

3711205

 

Wiring And/Or Connector-Vehicle Entertainment - Repair Or Replace

 

37112

 

40

 

0

 

01

 

05

 

Use Published Labor Operation Time

 

 

 

 

 

 

 

 

 

 

Document ID# 2001040

 

Subject:EI07199 - Radio Speaker Buzz Noise #07-08-44-013 - (07/31/2007)

Models:2007 Chevrolet Silverado

 

 

2007 GMC Sierra

 

 

Attention: Proceed with this bulletin ONLY if the customer has commented about this concern AND the EI number is listed in GMVIS, otherwise disregard the bulletin and proceed with diagnostics found in the published Service Information. THIS IS NOT A RECALL. Refer to Service Bulletin 04-00-89-053A for more detail on the use of engineering information bulletins.

 

Condition

Important: If the customer did not bring their vehicle in for this condition, do not proceed with this bulletin.

 

Some customers may comment on a door trim buzz noise during radio speaker operation.

 

Correction

GM Engineering is attempting to determine the root cause of the above condition. GM Engineering has a need to obtain information first hand during diagnosis and BEFORE repair. As a result, this information will be used by engineering to "root cause" the customer's concern and develop/validate a field fix. Please follow the instructions below regarding the requested information.

 

If the customer's concern can be duplicated, document the following information in the repair order:

 

 

1. From which area of the door does the buzz originate?
   
2. When the buzz is detected, document the following radio settings:

   • volume

    

    

   • bass

    

    

   • midrange

    

    

   • treble

    

   
   

3. Based on the location of the buzz, remove the door trim and search for potential causes. Inspect the speaker connection for a secure fit. Inspect the area behind the door trim panel and insulation cover for loose fittings or components. If the cause is isolated, perform necessary corrective actions to alleviate the buzz.
   
4. For dealers located in SE Michigan ONLY between 7:00 a.m.- 4:00 p.m. - contact the engineer (Matt Berg) prior to making any repairs. For all other cases, if the speaker is found to be defective proceed with the repair. Submit a Field Product Report (refer to bulletin 02-00-89-002F) containing all information requested in this bulletin as well as the diagnosis and repair.
   

Engineer Contact Information

For dealers located in the Detroit, MI area ONLY, contact the engineer listed below prior to making any repairs.

 

Engineer

 

Phone Number

 

Location

 

Matthew Berg

 

248-891-9302

 

Detroit, MI Area

 

Warranty Information

For vehicles repaired under engineering direction, use:

 

Labor Operation

 

Description

 

Labor Time

 

C9803*

 

Engineering Information - Radio Speaker Buzz

 

0.7 hr

 

*This labor operation number is for bulletin use only. This number will not be published in the Labor Time Guide.

 

 

 

 

 

 

 

 

 

 

 

Document ID# 1962625

 

Subject:No Audio/No Sound Heard from Radio Speakers, Turn Signals, Hazard Signals and No Warning Chimes When a Door or Liftgate is Opened (Inspect/Seat C2 Audio Amplifier Connector) #07-08-44-008 - (04/18/2007)

Models: 2007 Cadillac Escalade, Escalade ESV, Escalade EXT

 

 

2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe

 

 

2007 GMC Sierra, Yukon, Yukon XL, Yukon Denali, Yukon Denali XL

 

 

with Speakers, Premium Audio w/Amplifier or Rear Stereo Audio (RPOs UQA, UQS or UK6)

 

 

Condition

Some customers may comment on one or all of the following conditions related to no audio/no sound:

 

 

• No sound from one or more of the radio speakers.

 

 

• No blinking sound heard form the turn signals or hazard signals when on.

 

 

• No audio warning chimes heard when a door or liftgate is opened.

 

Cause

The C2 Audio Amplifier Connector may become unseated at the amplifier.

 

Correction

Inspect/Seat the C2 Audio Amplifier Connector (16-way, Black Connector).

 

 

1. Remove the radio, amplifier, and SIR fuses located in the Underhood Bussed Electrical Center (BEC).
   
2. Gain access to the radio speaker amplifier. Refer to Radio Speaker Amplifier Replacement in SI.
   
    
    
   
    
   
3. Visually inspect and pull on the C2 Audio Amplifier Connector (1).
   
4. If the connector is properly seated, then refer to SI for further diagnosis based on the customers condition.
   
5. If the connector is loose, then reinstall the C2 Audio Amplifier Connector.Important: Verify the connector is seated and locked into place.
    
   
6. Install the fuses.
   
7. Verify the condition has been fixed and clear any DTCs.
   
8. If securing the connector does not correct the condition, refer to SI for further diagnosis and repair.
   
9. Install the radio speaker amplifier assembly and any other components removed to gain access to the amplifier. Refer to Radio Speaker Amplifier Replacement in SI.
   

Warranty Information

For vehicles repaired under warranty, use:

 

Labor Operation

 

Description

 

Labor Time

 

R9734*

 

Connector, C2 Audio Amplifier - Inspect/Seat

 

0.7 hr

 

*This labor operation is for bulletin use only. The number will not be published in the Labor Time Guide.

 

 

 

 

 

 

 

 

 

 

 

 

Document ID# 1865409

 

Subject:Buzz, Pop or Whine Noise from Any Speaker (Secure Wiring Harness) #06-08-44-031 - (10/04/2006)

Models:2007 Cadillac Escalade, Escalade ESV, Escalade EXT

 

 

2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe

 

 

2007 GMC Sierra, Yukon, Yukon XL, Yukon Denali

 

 

with Speakers, Premium Audio w/ Amplifier (RPOs UQA or UQS)

 

 

Condition

Some customers may comment on a buzz, whine, distortion, pop, or static noise coming from any speaker.

 

Cause

The radio low level signal drain wires may be too long.

 

Correction

 

1. Remove the floor console bezel assembly (cup holder).
   
2. Remove the wire harness connector retaining clips to view wire harness and connector C211.
   
    
   
3. Inspect the bare silver colored drain wires at C211 to see if the wires are touching adjacent terminals. Refer to the above graphic.
   
4. If the wires are too long, pull back the excess wire and secure the slack to the harness using electrical tape.
   
5. If securing the harness does not correct the condition, refer to SI for further diagnosis and repair.
   
6. Install the harness connector clips.
   
7. Install the floor console bezel assembly (cup holder).
   

Warranty Information

For vehicles repaired under warranty, use:

 

Labor Operation

 

Description

 

Labor Time

 

N6632

 

Wiring and/Or Connector-Vehicle Entertainment - Repair Or Replace

 

Use Published Labor Operation Time

[ujtruck]

Mike's Reply should resolve the issue, it is a wire short - Guaranteed.

[07escalade]

had this prob

 

Document ID# 1962625

 

Subject:No Audio/No Sound Heard from Radio Speakers, Turn Signals, Hazard Signals and No Warning Chimes When a Door or Liftgate is Opened (Inspect/Seat C2 Audio Amplifier Connector) #07-08-44-008 - (04/18/2007)

Models: 2007 Cadillac Escalade, Escalade ESV, Escalade EXT

 

 

2007 Chevrolet Avalanche, Silverado, Suburban, Tahoe

 

 

 

check connector still no change. I guess I will change the amp next