File in Section:

Service Bulletin

Bulletin No.:
Date:

08 - Body and Accessories
10-08-44-004C
November, 2012

INFORMATION
Subject:

Information on USB Command and Control Multimedia Player Interface/List of
Supported Apple Devices

Models:

2011-2013 Buick Regal
2010-2012 Cadillac SRX
2009-2013 Chevrolet Avalanche, Silverado, Suburban, Tahoe
2011-2013 Chevrolet Cruze, Equinox, Volt
2010-2013 GMC Terrain
All Equipped with Convenience and Connectivity Package (RPOs UFV, UUK, UUL, UYS)

This bulletin is being revised to remove the 2013 SRX. Please discard Corporate Bulletin
Number 10-08-44-004B (Section 08 – Body and Accessories).

USB Radio and MP3 Functionality
The universal serial bus (USB) will be a USB 2.0 port
on the radio faceplate, on the IP or in the center
console. This interface will give the customer the
additional functionality of iPod®/MP3 command and
control. Customers now have full radio control of the
iPod/MP3 audio files via the USB cable. A single USB
connection allows digital audio transferring from the
iPod to the radio. The iPod will be charging while
connected to the radio. The customer will also have
playback capability with a USB memory stick (only MP3
and WMA files).
Note: Not all memory sticks are supported.
Note: Video from the iPod is NOT capable of being
transferred to a Navigation radio display.

Problems with iPod Not Connecting
If the infotainment system does not operate properly
when using a device connected through the USB port,
this may be due to an incompatible media device.
Important: DO NOT replace the radio or multimedia
interface module due to a customer device
incompatibility issue.
Verify the customer's media device is validated for this
system using the list below. If the customer's device is a
validated device for this system, follow the SI
diagnostic procedure to isolate the fault. If the
customer's device is not on the validated device list,
explain to the customer that their particular unit is not
compatible with the system.

Copyright 2012 General Motors LLC. All Rights Reserved.

Troubleshooting Tips for iPod Devices
1. Verify the version of the iPod/MP3 to confirm that it
is supported.
2. Unplug and re-insert the iPod to verify the
customer concern.
3. Verify the battery charge of the iPod. A low battery
condition on the iPod may not allow it to connect to
the radio. The iPod may need to be charged before
it can be controlled by the radio.
4. If the customer receives a "Device Not Supported"
message on their radio or is having general iPod/
MP3 connection issues (and they have a
supported device), they may need to reset their
iPod. To reset the iPod:
• For the iPod nano® and iPod classic®, toggle
the Hold switch on and off (slide it to Hold, then
turn it off again). Press and hold the Menu and
Center (Select) buttons simultaneously until the
Apple® logo appears, about 6 to 8 seconds.
You may need to repeat this step.
• For the iPod touch® and iPhone®: Press and
hold the Sleep/Wake button for a few seconds
until the red slider appears, then slide the slider.
5. For iPod touch and iPhone: To obtain full use
capabilities of their device, it needs to be fully
powered up when connecting to the USB port. If
these devices are fully powered down or in “sleep”
mode, please advise the customer to press and
hold the Sleep/Wake button on the top of the
device for a few seconds and if an unlock pass
code is required, to enter the pass code as well as
slide the lower “Unlock” slider.

Page 2

November, 2012

6. Have the customer inspect their cable for quality.
• Aftermarket cables can wear from use. The
customer may need to purchase a new USB
cable.
• Verify that cable extensions are not present.
The extra capacitance may cause too large a
signal drop for the iPod to communicate with
the radio.
7. If the customer receives a "Device Not Supported"
message on their radio with an iPod connected
(and they have a supported device), the customer
may need to download the latest firmware from the
Apple website (Please visit www.apple.com for
more information).

Bulletin No.: 10-08-44-004C

Validated Apple Device - Both Charge/
Support Digital Audio
Important: None of these device lists below support
video.
Important: Not all iPhone functions are fully
supported.
For further information on identifying iPod models,
please visit http://support.apple.com/kb/HT1353.

__________________________________________________________________

2279487

Brand

Apple

Description

Number

iPod classic 5 & 5.5 Gen

1

iPod nano 1Gen

2

iPod nano 2Gen

3

iPod nano 3

4

iPod classic

5

iPod touch 1Gen & 2Gen

6

iPhone (User must switch to
"airplane mode")

7

iPod nano 4Gen

8

Important: These devices (and additional MP3
players) may be capable of connecting to the other
USB options by internally setting the MP3 device to
mass storage class (MSC) mode. In this mode, the
USB port will see the device as a flash drive. Please
have the customer refer to their MP3 device manual on
how to set the device to MSC. If the device is not able
to be set to MSC, the customer must use the AUX jack.
Note: MTP mode must be used in order to transfer
ANY Digital Rights Management (DRM) protected
content.

Bulletin No.: 10-08-44-004C

November, 2012

iPod Specifications
Function

Page 3

iPod Specifications (cont'd)

Support

Function

Support contents for iPod

Support

Support contents for iPod

Audio

Yes

Audiobook speed

No

Audiobook

Yes

Track info Types

Yes

Podcast

Yes

Chapter

No

Video

No

Artwork Data

No

Storage Lingo

No

Support operation for iPod
Alphabet Sort select

No

Non-Validated Apple Device

2279492

Brand

Apple

Description

Number

iPod shuffle Gen1

1

iPod shuffle Gen2

2

iPod mini Gen1 & 2

3

iPhoto

4

iPod G4

5

iPod Gen3

6

iPod Gen2

7

iPod Gen1

8

iPod shuffle Gen3

9

Specifications
Function

Support

Play the following content types encountered on Mass
Storage Playback devices for WMA
Window Media Audio

Yes

VBR Voice, or according to
Microsoft Specification

No

Meta Data Support
comparable to MP3 ID3 tags

Yes

Supported File Table format
Fat 12

Yes

Fat 16

Yes

Page 4

November, 2012
Function

Support

Play the following content types encountered on Mass
Storage Playback devices for WMA
Fat 32

Yes

NTFS

No

HFS/HFS+

No
No

ATAPI

No

Other USB Device Supported
Requirements (X = Supported;
— = Not Supported)
Function

Support
USB support Class

Support command for MSC (Mass Storage Class)
SCCI

Bulletin No.: 10-08-44-004C

MSC (Mass Storage Class)

X

MTP (Media Transfer
Protocol)

—

iPod (over HID Class)

X

Playable Content

Category

File Folder

Function

Support

MP3

ID3 Tag

No

MP3 Pro

—

File number in 1
folder (max)

255 root/
65534sub folders

AAC (m4a, m4b), AAC
DRM (m4p)

—

Folder number

700

WMA

X

folder level (Max)

8

WMA (DRM)

—

File Name
length (Max)

64

Folder Name
Length

64

Extended
Partition

Yes

Playback Operation (X = Supported;
— = Not Supported)

X

Play the following content types encountered on Mass
Storage Playback devices for MP3
Variable Bit Rate (VBR)

X

Fixed Bit Rates between 8
and 320 kbps (MPEG1+2xx
mono/stereo)

X

Sample Rates: 16, 22, 32,
44.1, and 48 kHz

X

Channels: Mono, Stereo,
and Joint Stereo

X

Supports playlist
formats (“m3u”)

X

Playback
Operation

Mass Storage
Class (MSC)

iPod

Play

X

X

Supports playlist
formats (“pls”)

—

Stop

X

X

ID3 tag Ver.1.0, 1.1, 2.3, 2.4

X

Pause

X

X

FF

X

X

RW

X

X

Track UP

X

X

Track Down

X

X

Chapter UP

—

—

Chapter Down

—

—

Track (Title)
Search

—

X

Shuffle

—

X

Repeat

—

X

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.

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