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ADM PERFORMANCE · 04-15-2009, 10:38 PM

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Service Information
2010 Chevrolet Camaro | Camaro Service Manual | Driver Information and Entertainment | Preliminary Information | Document ID: 2262491
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#PIC5139: Buzz Noise During Call When Using Bluetooth - (Apr 7, 2009)

Subject: Buzz noise during call when using Bluetooth®

Models: 2008 - 2009 Cadillac CTS, CTS-V

2009 Buick Enclave, Lacrosse, Lucerne

2009 Cadillac DTS, Escalade, Escalade ESV, Escalade EXT, SRX, XLR

2009 Cadillac STS with RPO YQ1 or YQ2

2009 Chevrolet Cobalt, Corvette, Equinox, HHR, Impala, Malibu, Silverado, Suburban, Tahoe, Trailblazer, Traverse

2009 GMC Acadia, Envoy, Sierra, Yukon, Yukon XL

2009 Hummer H2. H3

2009 Pontiac G5, G6, Solstice, Torrent

2009 SAAB 9-7x

2009 Saturn Aura, Outlook, Sky, Vue

2010 Chevrolet Camaro

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The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

Condition/Concern:
On any vehicle equipped with OnStar® (UE1) & Bluetooth® (UPF), an EMC buzz can be heard from the land-line side only of the phone during a Bluetooth® phone call made with an older model GSM phone. The buzz is only heard with older model GSM phones and is dependent on the distance of the phone from the microphone. The newer 3G GSM phones or other cellular phones (CDMA, TDMA, etc) have not shown this concern.

Recommendation/Instructions:
A new microphone has been developed to address to the EMC buzz from GSM phones. Replacement microphones will be released for service as soon as parts are available.

A service bulletin with further information will be released when parts are available.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information.

WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION

© 2009 General Motors Corporation. All rights reserved.

04-15-2009, 10:38 PM	#41
ADM PERFORMANCE Drives: Anything I want Join Date: Oct 2008 Location: DfW - Texas Posts: 5,405	Codeman,you know about this! xTooltipElement Service Information 2010 Chevrolet Camaro \| Camaro Service Manual \| Driver Information and Entertainment \| Preliminary Information \| Document ID: 2262491 -------------------------------------------------------------------------------- #PIC5139: Buzz Noise During Call When Using Bluetooth - (Apr 7, 2009) Subject: Buzz noise during call when using Bluetooth® Models: 2008 - 2009 Cadillac CTS, CTS-V 2009 Buick Enclave, Lacrosse, Lucerne 2009 Cadillac DTS, Escalade, Escalade ESV, Escalade EXT, SRX, XLR 2009 Cadillac STS with RPO YQ1 or YQ2 2009 Chevrolet Cobalt, Corvette, Equinox, HHR, Impala, Malibu, Silverado, Suburban, Tahoe, Trailblazer, Traverse 2009 GMC Acadia, Envoy, Sierra, Yukon, Yukon XL 2009 Hummer H2. H3 2009 Pontiac G5, G6, Solstice, Torrent 2009 SAAB 9-7x 2009 Saturn Aura, Outlook, Sky, Vue 2010 Chevrolet Camaro -------------------------------------------------------------------------------- The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI. Condition/Concern: On any vehicle equipped with OnStar® (UE1) & Bluetooth® (UPF), an EMC buzz can be heard from the land-line side only of the phone during a Bluetooth® phone call made with an older model GSM phone. The buzz is only heard with older model GSM phones and is dependent on the distance of the phone from the microphone. The newer 3G GSM phones or other cellular phones (CDMA, TDMA, etc) have not shown this concern. Recommendation/Instructions: A new microphone has been developed to address to the EMC buzz from GSM phones. Replacement microphones will be released for service as soon as parts are available. A service bulletin with further information will be released when parts are available. Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the information. WE SUPPORT VOLUNTARY TECHNICIAN CERTIFICATION © 2009 General Motors Corporation. All rights reserved.