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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 883 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)REPAIR INSTRUCTIONSRADIO VOLUME COMPENSATOR INTERIOR NOISE MICROPHONE REPLACEMENT (HEADLINER)
2008 Chevrolet Chevy Express G3500, Van Passenger Extended

Radio Volume Compensator Interior Noise Microphone Replacement (Headliner)

2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Radio Volume Compensator Interior Noise Microphone Replacement (Headliner)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2012 GMC Yukon XL, 2012 GMC Yukon, 2012 Chevrolet Tahoe, 2012 Chevrolet Suburban, and 2012 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Radio Volume Compensator Interior Noise Microphone
GM2350645Courtesy of GENERAL MOTORS COMPANY
Radio Volume Compensator Interior Noise Microphone Replacement (Headliner)

Callout Component Name
Preliminary Procedure 
Lower the front or rear of the headlining trim panel enough to gain access to the microphone. Refer to Headlining Trim Panel Replacement (LWB w/U42 w/o CF5) , Headlining Trim Panel Replacement (LWB w/CJ2) , Headlining Trim Panel Replacement (SWB w/o CF5 and U42) , Headlining Trim Panel Replacement (LWB w/CJ3) , Headlining Trim Panel Replacement (Avalanche/Escalade EXT w/CF5 w/o U42) , Headlining Trim Panel Replacement (SWB w/CF5 w/o U42) , Headlining Trim Panel Replacement (Avalanche/Escalade EXT w/U24 w/o CF5) , Headlining Trim Panel Replacement (LWB w/CF5 and U42) , Headlining Trim Panel Replacement (Avalanche/Escalade EXT w/CF5 and U42) , Headlining Trim Panel Replacement (Avalanche/Escalade EXT w/CJ3) , Headlining Trim Panel Replacement (SWB w/CF5 and U42) , Headlining Trim Panel Replacement (SWB w/U42 w/o CF5) , Headlining Trim Panel Replacement (LWB w/CF5 w/o U42) , Headlining Trim Panel Replacement (SWB w/CJ3) , Headlining Trim Panel Replacement (Avalanche w/CJ2 w/o CF5 and U42)
1 Radio Volume Noise Compensator Interior Noise Microphone (Qty: 3)
  1. Disconnect the electrical connector.
  2. Note the foam position around the front of the microphone and the center foam plug over the top of the microphone to ensure proper installation.
  3. Remove the foam plug from the top of the microphone and large foam patch from around the microphone.
  4. Unsnap the microphone from the grille assembly bracket.
RENDER: 1.0x

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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