File in Section:

-

Bulletin No.:

Service Bulletin

PI1126C

Date:

June, 2014

PRELIMINARY INFORMATION
Subject:

Blank Screen After Startup and Reverse, Rearview Camera Message On, Touch Screen
Inoperable, Bluetooth® and Navigation Concerns

Models:

2014 Buick LaCrosse Built Prior to February 20,2014
2014 Buick Regal Built Prior to February 20,2014
2013-2014 Cadillac ATS Built Prior to February 20,2014
2013-2014 Cadillac SRX Built Prior to February 20,2014
2013-2014 Cadillac XTS Built Prior to February 20,2014
2014 Cadillac CTS Sedan (VIN A) Built Prior to February 20,2014
2014 Cadillac ELR Built Prior to February 19,2014
2014 Chevrolet Corvette Built Prior to February 20,2014
2014 Chevrolet Impala (VIN 1) Built Prior to January 8, 2014
2014 Chevrolet Silverado 1500
2015 Chevrolet Silverado
2014 GMC Sierra 1500
2015 GMC Sierra
Equipped with RPOs IO4, IO5, IO6 or RAO (except with RPO UPF)

Attention: For 2013 Cadillac ATS, SRX, XTS vehicles ONLY: Be sure the USB update from the
most current version of PI1062 has been installed with the provided USB stick to
properly update the Gulf of Mexico map before proceeding (This PI supersedes #12293.
There is no need for the silver and black USB sticks mentioned).
This PI has been revised to add the last Condition/Concern. Please discard PI1126B.

DVD Software Update disc for Infotainment Files (Version 11 2014 North American Data) will be shipped to
U.S. and Canadian dealers starting March 3rd, 2014.

Condition/Concern
Some customers may comment on the following concerns:
RPO
IO4

IO5 or
RAO
W/
UA3

IO6 or
RAO
W/
UA3
&
UY4

IO6
(ELR)

X

X

X

X

X

X

X

Condition

Center Stack showing a blank display right after engine start
No device connected is displayed in now playing view

X

X

Sporadic system reset, possibly seen when view phone contact details

X

X

Screen stops updating and no visual changes are observed

X

Touch Screen sporadic inoperable

X

X

Time display overlaps Icons in the application tray

X

X

RVC touch to exit RVC screen is not working after shifting back into drive

X

X

X

RPO
IO4

IO5 or
RAO
W/
UA3

IO6 or
RAO
W/
UA3
&
UY4

IO6
(ELR)

Black Screen and reverse guideline displayed while in drive

X

X

X

Upon answering a Bluetooth hands-free call the HMI Module takes over 5 sec to converge
(Noise/echo on the first connection)

X

X

X

Grammar fixes for issues in POR, ITA, NLD

X

X

X

X

X

X

X

X

Condition

Blue screen popped up on ICS screen periodically while playing a movie with RSE system
Device initializing message heard for too long so can not access contacts via speech

X

Voice Rec language swapped to English, prompts are heard with the accent of the display
language

X

Map display black around the vehicle Icon on the map (half mile scales)

X

X

Phone Call does not complete hang up when call is done via speech recognition in the
Navigation application

X

No device connected is displayed in now playing view

X

X

Sporadic system reset, possibly seen when searching address, scrolling/panning on the
map or view phone contact details

X

X

Map reset when the navigation system attempts to draw text around a curved road

X

X

App tray and interaction selector in may is not faded out properly

X

X

Text translation and changes - 'Not Able To Charge'

X

Hybrid text changes for 'Horn Chirps' to be changed to 'on'

X

Updated welcome animation

X

Fixed Cadillac welcome sound

X

Blue screen popped up on ICS screen periodically while playing a movie

X

Bluetooth will not make or receive Bluetooth calls. The phone will show a call in process, but
the call will not go through the vehicle. It will stream music. The Bluetooth icon is displayed
on the radio display but the phone battery icon and signal strength are not.

X

In addition to the above customer concerns, the following updates have been included in this software update:
• Correction to Spanish speech input for destination entry that numbers are included in the search input for the
address.
• Pandora favorite saved items — If two phones were paired, the channel list of the 1st phone was not cleared
when the 2nd phone was paired.

Recommendation/Instructions

3749596

Before updating software, check the HMI build version. The HMI build version label should be GMG2.12.6N106.1 or
earlier.
Caution: If the software version is later than GMG2.12.6N106.1, damage to the HMI module may occur. DO NOT
PROCEED WITH THIS PI.
To verify the HMI build version, on the radio push the following button combination together (refer to chart below),
then select HMI from the onboard development screen.
Buick

Power+Menu+Home

Cadillac

Home+Volume Down

Chevrolet

Power+Menu+Home

GMC

Power+Menu+Home

An updated software calibration has been released to address the above conditions. Update the HMI Module using a
USB FLASH DRIVE and the Service Programming System (SPS) with the files available on TIS2WEB. Refer to the
SPS procedures in SI.
Important: This procedure is a USB flash drive programming event. This IS NOT a standard TIS2WEB
programming event. This procedure requires a USB 2.0 flash drive. The minimum USB flash drive capacity
requirement is 4 GB. The software downloaded to the USB flash drive can be used to update all vehicles involved in
this bulletin.
Any existing data on the USB flash drive will be erased during the TIS2WEB-to-USB flash drive download process.
To ensure important data IS NOT deleted from the USB flash drive, transfer the data from the USB flash drive onto
another approved data storage device BEFORE attempting to download software from TIS2WEB.
Once the software is downloaded to the USB, DO NOT add any data to the storage device.
After USB programming has been completed, reprogram the HMI module, this time using the Service Programming
System (SPS) with the latest calibrations available on TIS2WEB. Refer to the SPS procedures in SI.
Clear any DTCs.
Important: The vehicle modules MUST go to sleep for 5 minutes after programming the HMI module. If not, the
vehicle may not have sound, blank screen, no touch response or the wrong splash screen may appear on the
screen. If this happens, shut off vehicle and wait the required 5 minutes before starting vehicle again.
Important: For RPO IO5, there was a production change in the software to change the Navigation icon (NAV)
display to NAV OnStar icon display.

Warranty Information
For vehicles repaired under warranty, use:
Labor Operation
2880168*

Description

Labor Time

Reprogram HMI Module (NAV Radio)

0.9 hr

Reprogram HMI Module (NON NAV Radio)

0.8 hr

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