Manual:HUMMER Hummer H3 Base 2010Page:28504 / 37523



Buzz Noise During Call When Using Bluetooth® (Replace Microphone and Bezel) (10-08-44-003B) — 2010 Hummer H3 Base, Automatic Service Manual

Buzz Noise During Call When Using Bluetooth® (Replace Microphone and Bezel) (10-08-44-003B)

Publication date: 2010-10-13
Reference number: 10-08-44-003B
Supersedes refnos: 10-08-44-003, 10-08-44-003A

Buzz Noise During Call When Using Bluetooth® (Replace Microphone and Bezel)

Buzz Noise During Call When Using Bluetooth® (Replace Microphone and Bezel)

TECHNICAL SERVICE BULLETIN

Reference Number(s): 10-08-44-003B, Date of Issue:  October 13, 2010
Affected Model(s): 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® (UE1) and Bluetooth (UPF)
Supercedes: 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).
Superceded Bulletin(s): 10-08-44-003A, Date of Issue:  June 9, 2010

Condition

Some customers may comment on a buzz noise (from the land-line side only) during a call.

On any vehicle equipped with OnStar® (UE1) and Bluetooth® (UPF), an electromagnetic compatibility (EMC) buzz can be heard from the land-line side only of the phone during a Bluetooth® 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)

Fig 1: Headliner Microphone
GM2534412Courtesy of GENERAL MOTORS CORP.

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

Fig 2: Console Microphone
GM2534413Courtesy of GENERAL MOTORS CORP.

A new microphone has been developed to address this concern. Replace the existing microphone with GM P/N 20951265.

Parts Information

Parts Information

Part Number Description
20951265 Microphone
25932003 LT. Titanium Bezel
25932004 Neutral Bezel
25966446 LT Opel Grey Bezel

Warranty Information

For vehicles repaired under warranty, use:

Warranty Information

Labor Operation Description Labor Time
R5114 Mobile Telephone Microphone Replacement Use Published Labor Operation Time