File in Section:
Bulletin No.:

Service Bulletin

Date:

08 - Body and Accessories
10-08-46-001C
April, 2016

TECHNICAL
Subject:

Radio Does Not Mute Enough When OnStar® Turn-by Turn Navigation Directions Are
Announced (Increase Volume Setting or Request Soft Mute Feature Change Through
OnStar® Customer Service)

Models:

2009-2016 GM Passenger Cars and Trucks (Excluding Models Equipped with RPOs
IO3, IO4, IO5, IO6, RAO, UG4, UGX, UGU, UGY, UI4, UI6, UI7 or UI8)
All Equipped with OnStar® (RPO UE1)

This Bulletin has been revised to add the 2016 Model Year and exclude additional RPOs.
Please discard Corporate Bulletin Number 10-08-46-001B.

Condition
Some customers may comment that when the radio is
on, it does not mute enough when the OnStar®
Turn-by-Turn Navigation directions are announced.

Cause
This condition may be caused by the customer
improperly setting the radio volume high enough when
the Turn-by-Turn Navigation messages are played.
OnStar® initiates a “soft mute” feature when the radio is
on during Turn-by-Turn Navigation direction
announcements. During the announcement, the radio
can still be heard at a very low volume. Previous model
years initiated a “hard mute” during this function which
completely muted the radio audio.

Correction
Instruct the customer to increase the radio volume
while getting the Turn-by-Turn Navigation direction
announcements. You can control the message volume
using the radio volume control, only when the
Turn-by-Turn navigation messages are playing.
Example:
– The volume can be adjusted during the Turn by Turn
directions and during any of the following Voice
commands - Cancel Route, Route Preview, Repeat,
Get My Destination.
Some customers that were accustomed to previous
model vehicles with the “hard mute” feature may be
dissatisfied with the function of the “soft mute” feature.

For those customers, contact the OnStar® Customer
Service Center by pushing the Blue OnStar® Button to
speak to a trained Advisor and request a change be
made to the vehicle from the “soft mute” setting to that
of the hard or complete muting of audio playback during
Turn by Turn directions. OnStar® will then create a
case number. Advise the customer that the vehicle
update should be completed Over the Air within 5
business days, after which an OnStar® Customer Care
advisor will follow-up with the customer to verify the fix.
If the customer does not hear back from OnStar® within
a week, advise them to press the Blue OnStar® Button
and ask for Customer Care to check status.

Warranty Information
For vehicles repaired under warranty, use:
Labor
Operation
3480048*

Contact OnStar® for Hard Mute
Request

0.2 hr

*This is a unique Labor Operation for Bulletin use only. It will
not be published in the Labor Time Guide.

GM bulletins are intended for use by professional technicians, NOT a "do-it-yourselfer". They are written to inform these
technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper
service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions, and know-how to do a
job properly and safely. If a condition is described, DO NOT assume that the bulletin applies to your vehicle, or that your
vehicle will have that condition. See your GM dealer for information on whether your vehicle may benefit from the
information.
Copyright 2016 General Motors LLC. All Rights Reserved.

Labor
Time

Description

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