17NA186 Service Bulletin/Repair Instructions

File in Section:
Service Bulletin
-
Bulletin No.:
17-NA-186
Date:
April, 2018
TECHNICAL

Subject:
Brand:
HVAC Pop-Up is Blank and/or Personalization Selections within Climate and Air

Quality, Collision/Detection Systems, or Lighting Menus are Missing at Times
Model:
Buick
Encore
Buick
Envision
Buick
LaCrosse
Cadillac
ATS
Cadillac
CT6
Cadillac
CTS
Cadillac
Escalade

Models
Cadillac
XT5
Cadillac
XTS
Chevrolet
Camaro
Chevrolet
Colorado
Chevrolet
Corvette
Chevrolet
Cruze
Chevrolet
Impala
Chevrolet
Malibu
Chevrolet
Silverado
Chevrolet
Suburban
Chevrolet
Tahoe
Chevrolet
Volt
GMC
Acadia
GMC
Canyon
GMC
Sierra
GMC
Yukon

Models
Model Year:

from
VIN:

to
from
to
All
All
Engine:
Transmission:
All
All
2017
2016
Copyright 2018 General Motors LLC. All Rights Reserved.
2017
2017
Page 2
April, 2018
Bulletin No.: 17-NA-186
Involved Region or Country
North America and N.A. Export Regions
Additional RPO/s:
IO5, IO6
Condition
Some customers may comment that when they enter Radio Settings on the infotainment

display, any of the personalization selections within the Climate and Air Quality, Collision/

Detection Systems, and Lighting menus are missing at times. Typically, the concern will

start happening as soon as the vehicle is started and it will last for an entire ignition cycle

if it is going to occur. However, if the ignition is turned off briefly and back on again before

the radio/tuner has a chance to go to sleep, the selections will typically reappear again.

Some customers may also comment that, when selecting HVAC control settings, the

HVAC responds correctly but the selections are not displayed on the radio (HVAC pop-up

is blank).

For the Camaro ONLY, the customer may also be unable to change settings of Ambient

Lighting and Link to Drive Mode.

If any of the personalization selections within the Comfort and Convenience menu are

missing at times, this bulletin does not apply. For those concerns, follow PIC6315 in SI.
Cause
This condition may be caused by the radio tuner module.
Correction
If this concern is experienced, replace the radio assembly.

Note: For Korean market ONLY, reprogram the radio. DO NOT replace the radio

assembly for GMK models (Impala, Volt, Camaro, Cruze, Malibu) if this concern is

experienced.

Note: If it is unknown what selections should be available within a particular menu, it is

suggested to compare to the same model year and model vehicle that is equipped with

the same infotainment system RPO to determine if any are missing at times.
Service Procedure
Warranty Information
Refer to Radio Replacement in SI.
For vehicles repaired under warranty, use:
Parts Information

Use the latest part number radio receiver listed in the

electronic parts catalog for the VIN you are working on.

For 2016 Camaro ONLY: If more than one part number

is listed with the VIN filter on, select the one that starts

with 8427 as this part number contains improvements

to address this concern.

For 2017 Impala and XT5 ONLY, if more than one part

number is listed with the VIN filter on, select the one

that starts with 8427 or 8429 or greater as these part

numbers contain improvements to address this

concern.
Labor

Operation
3420840
Description
Labor Time
Radio Replacement
Use

Published

Labor

Operation

Time
Version
3
Modified
November 17, 2017 – Updated the Subject, Condition, Correction and added Parts

Information.

April 6, 2018 – Added a Note in the Correction section for the Korean market and

changed the Warranty statement.
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.
WE SUPPORT VOLUNTARY

TECHNICIAN

CERTIFICATION

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