2010 Cadillac Truck Escalade EXT AWD V8-6.2L Technical Service Bulletin # 10-08-44-003B Date: 101013

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Technical Service Bulletin # 10-08-44-003B Date: 101013

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

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 337

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

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

Parts Information

Warranty Information

For vehicles repaired under warranty, use the table.