CTS Coupe RWD V8-6.2L SC (2011)
Cellular Phone Microphone: Customer Interest
Audio - Buzz Noise When Using Bluetooth(R)
TECHNICAL
Bulletin No.: 10-08-44-003B
Date: October 13, 2010
Subject: Buzz Noise During Call When Using Bluetooth(R) (Replace Microphone and Bezel)
Models:
2009-2011 Buick Enclave, LaCrosse, Lucerne
2008-2011 Cadillac CTS, CTS-V
2009-2011 Cadillac DTS, Escalade, Escalade ESV, Escalade EXT, SRX, STS (with RPO YQ1 or YQ2), XLR
2009-2010 Chevrolet Cobalt, Corvette, Equinox, HHR, Impala, Malibu, Silverado, Suburban, Tahoe, TrailBlazer, Traverse
2010-2011 Chevrolet Camaro
2009-2010 GMC Envoy
2009-2011 GMC Acadia, Sierra, Yukon, Yukon XL
2009-2010 Pontiac G5, G6, Solstice, Torrent
2009-2010 HUMMER H2, H3
2009-2010 Saturn AURA, OUTLOOK, SKY, VUE
2009 Saab 9-7X
All Equipped with OnStar(R) (UE1) and Bluetooth (UPF)
Supercede:
This bulletin is being revised to replace the microphone and bezel (if needed) and update model years. Please discard Corporate Bulletin Number
10-08-44-003A (Section 08 - Body and Accessories).
Condition
Some customers may comment on a buzz noise (from the land-line side only) during a call.
On any vehicle equipped with OnStar(R) (UE1) and Bluetooth(R) (UPF), an electromagnetic compatibility (EMC) buzz can be heard from the land-line
side only of the phone during a Bluetooth(R) phone call made with an older model global system for mobile communications (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.
Correction
Equipped with Headliner Microphone (Cobalt, HHR (non-sunroof) H2, H3)
A new microphone and bezel has been developed to address this concern. Replace the existing microphone with GM P/N 20951265. Also replace the
bezel. Refer to the parts information table below for correct color/part number.
Equipped with Overhead Console Microphone
