17NA276

Bulletin No.:
Service Bulletin
Date:
17-NA-276
August, 2019
INFORMATION
Subject:
Brand:
Buick
Cadillac
Chevrolet
GMC
Loss of Phone Pairing or Favorites, Last Setting of Volume, Station, App, and Audio
Settings Change When Vehicle Shuts Down in Demo Mode
Model:
Model Year:
VIN:
from
to
Enclave
2020
2020
Regal
2018
2020
CTS
2017
ATS
XTS
2018
CT6
XT4
2019
2020
XT5
XT6
2020
2020
Blazer
2019
2019
Colorado
2019
Equinox
2019
Malibu
2019
Traverse
2020
Silverado
1500 (New
Model)
2019
2020
Silverado
2020
2020
2019
Volt
2019
2020
Terrain
2018
to
Transmission:
All
All
2020
2020
Canyon
2019
Sierra 1500
(New Model)
2019
2019
Sierra
2020
2020
Involved Region or Country
North America, N.A. Export Regions
Additional Options (RPOs)
Equipped with Infotainment System RPO IOS, IOT or IOU
Copyright 2019 General Motors LLC. All Rights Reserved.
Engine:
2019
Camaro
Acadia
from
Page 2
Condition
August, 2019
Bulletin No.: 17-NA-276
Some customers/technicians may comment that when the vehicle is in Demo Mode
(unsold vehicle), the phone would stay paired for the key cycle and then would lose
pairing to the radio after the vehicle shuts down and started after 10 minutes, unable to
log in or create a User Profile. Additional operational characteristics of Demo Mode
include no retention of the following:
• Stored Favorites
• Last station tuned
• Bluetooth synced device(s)
• Volume level (too soft or too loud)
• Last app or screen view
• Audio/equalizer settings
Loss of functionality on the above items may be due to the design intent of the vehicle
while in Demo Mode.
This may be due to the design intent of the vehicle in Demo Mode.
Cause
5134106
Cadillac shown, Buick, Chevrolet and GMC similar.
Note: If a device was originally paired while in Demo Mode, a similar condition could
occur that randomly continues to drop Bluetooth pairing even after exiting Demo Mode. If
the vehicle is not in Demo Mode, but it is believed that the device was originally paired
while in Demo Mode, then delete the device from the radio, delete the radio from the
device, and pair the device again.
Correction
No correction is needed for this condition. This is the normal operating characteristic of
the Demo Mode of the vehicle. Once the vehicle is sold, select the option labeled “Not a
Demo Vehicle” to exit Demo Mode.
This information is also now available in SI description and operation documents. Refer
to Radio/Audio System Description and Operation in SI.
Bulletin No.: 17-NA-276
August, 2019
Page 3
Version
5
Modified
August 22, 2018 – Added additional models, the 2019 Model Year, a graphic to the Cause
section and a Note to the Correction section.
August 30, 2018 – Updated the Subject and Condition to include additional operational
characteristics of Demo Mode.
February 21, 2019 – Added 2019 Blazer and Malibu models.
August 20, 2019 – Added the 2020 Model Year, additional models and operational
characteristics of Demo Mode.
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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