GMC TSB #PI0774B

2012 GMC Sierra 1500

TSB Document:

Affected Component: EQUIPMENT:ELECTRICAL

Summary
This preliminary information bulletin provides a descritption of operation of the echo control and noise cancellation settings for concernc regarding noice drop outs during calls and muffled sound.

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Date Published
DEC 04, 2012
NHTSA TSB #
10138556
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