19NA081

Service Bulletin
Bulletin No.:
19-NA-081
Date:
April, 2019
TECHNICAL
Subject:
Brand:
Buick
Cadillac
Chevrolet
GMC
Audio Muting When Listening to Some SiriusXM Channels Due to Interference in Some
Geographic Locations
Model:
Model Year:
from
VIN:
to
Enclave*
2013
2017
Encore
2017
2017
Envision
2016
2017
LaCrosse
2014
2017
Regal
2014
2017
Verano
2016
2017
ATS
2013
2017
CT6
2016
2017
CTS
2014
2017
ELR
2015
2016
Escalade
2015
2017
Escalade
ESV
2015
2017
SRX
2013
2016
XT5
2017
2017
XTS
2013
2017
Camaro
2016
2017
Colorado
2015
2017
Corvette
2015
2017
Cruze
2016
2017
Impala
2014
2017
Malibu
2016
2017
Silverado
2014
2017
Suburban
2015
2017
Tahoe
2015
2017
Traverse*
2013
2017
Volt
2016
2017
Acadia*
2013
2017
Canyon
2015
2017
Sierra
2014
2017
Yukon
2015
2016
Copyright 2019 General Motors LLC. All Rights Reserved.
from
to
All
All
Engine:
Transmission:
All
All
Page 2
April, 2019
Bulletin No.: 19-NA-081
Involved Region or Country
North America
Additional Options (RPOs)
ONLY with Infotainment System RPOs IO3, IO4, IO5, IO6 or UI2, UI4, UI5, UI6, UI7,
UI8 (UIX programs designated above with *)
Also equipped with SiriusXM Satellite Radio (RPO U2K)
Condition
Some customers may comment on the audio muting when listening to some SiriusXM
channels, but if they change channels they will find others that experience normal audio.
They may also comment that the concern appears to happen in some geographic
locations but not others. If they experience this concern, they should continue to listen to
the currently tuned channel and observe if the condition clears after approximately 1.6 km
(1 mile).
Cause
The cause of the condition may be the result of interference from transmitting sources
outside of SiriusXM’s frequency range.
Correction
If you encounter a vehicle with the above concern, check the vehicle for any codes and
repair them as necessary.
If no codes are present and the customer is experiencing muting at the dealer’s location,
perform the following Service Procedure steps.
Service Procedure
Warranty Information
Note: The following steps are intended to be
performed in an area where muting is or has been
experienced.
For vehicles repaired under the Bumper-to-Bumper
coverage (Canada Base Warranty coverage), use the
following labor operation. Reference the Applicable
Warranties section of Investigate Vehicle History (IVH)
for coverage information.
1.
2.
3.
4.
Tune to SXM Channel 1.
Note if muting is experienced or not experienced.
Tune to SXM Channel 2.
Note if muting is experienced or not experienced.
• If both channels experience muting, the SXM
filter is most likely not an appropriate correction
for the condition. It is unlikely that the
customer’s concern is a result of the
interference described above. The technician
should follow SI diagnostics and repair as
necessary.
• If channel 1 is not muting and channel 2 is
muting, there is most likely interference from
transmitting sources outside of SXM’s
frequency range. The SXM filter is most likely
an appropriate correction for the condition.
Install the SXM filter inline between the coaxial
antenna connection at the back of the radio (or
radio tuner) and coaxial cable connector.
Note: If adding SXM filter, follow the Radio
Replacement in SI to get to the coaxial.
Parts Information
Causal
Part
Labor Operation
3486868*
Description
Labor
Time
Buick Enclave
Install SXM Flter
0.6 hr
Buick Encore
Install SXM Flter
0.6 hr
Buick Envision
Install SXM Flter
0.7 hr
Buick Lacrosse
Install SXM Flter
0.9 hr
Buick Regal
Install SXM Flter
0.4 hr
Buick Verano
Install SXM Flter
0.4 hr
Cadillac ATS
Install SXM Flter
0.5 hr
Cadillac CT6
Install SXM Flter
0.8 hr
Description
Part
Number
Qty
Cadillac CTS
Install SXM Flter
1.0 hr
SXM Filter
84601829
1
Cadillac ELR
Install SXM Flter
1.3 hrs
Cadillac Escalade
Install SXM Flter
1.0 hr
Cadillac
Escalade ESV
Install SXM Flter
1.0 hr
Cadillac SRX
Install SXM Flter
0.9 hr
Cadillac XT5
Install SXM Flter
1.5 hrs
Bulletin No.: 19-NA-081
Labor Operation
April, 2019
Description
Labor
Time
Cadillac XTS
Install SXM Flter
0.6 hr
Chevrolet Camaro
Install SXM Flter
0.6 hr
Chevrolet Colorado
Install SXM Flter
0.6 hr
Chevrolet Corvette
Install SXM Flter
1.6 hrs
Chevrolet Cruze
Install SXM Flter
0.4 hr
Chevrolet Impala
Install SXM Flter
1.6 hrs
Chevrolet Malibu
Install SXM Flter
0.4 hr
Chevrolet Silverado
Install SXM Flter
0.5 hr
Chevrolet Suburban
Install SXM Flter
1.0 hr
Chevrolet Tahoe
Install SXM Flter
1.0 hr
Chevrolet Traverse
Install SXM Flter
0.6 hr
Chevrolet Volt
Install SXM Flter
1.4 hrs
GMC Acadia
Install SXM Flter
0.6 hr
GMC Canyon
Install SXM Flter
0.6 hr
GMC Sierra
Install SXM Flter
0.5 hr
GMC Yukon
Install SXM Flter
1.0 hr
Page 3
*This is a unique Labor Operation for Bulletin use only.
Version
1
Modified
Released April 16, 2019
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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