18NA189

Bulletin No.:
Service Bulletin
Date:
18-NA-189
November, 2019
TECHNICAL
Subject:
Rattle/Noise in Headliner, Rear of Front Sunroof Window
Brand:
Model:
GMC
Holden
Model Year:
VIN:
from
to
Acadia
2018
2020
Acadia
2019
2019
from
Engine:
Transmission:
All
All
to
Involved Region or Country
North America, Middle East, Australia, New Zealand
Additional Options (RPOs)
Equipped with ROOF-SUN, GLASS, SLIDING, ELEC, TRANSPARENT GLASS
FIXED (C3U)
Condition
5087144
Customer may comment on hearing a Rattle/Noise in headliner, behind the front sunroof
window.
Cause
Correction
Copyright 2019 General Motors LLC. All Rights Reserved.
The cause of the condition may be that the sunroof opening trim ring is not securely glued
to headliner.
Note: The condition can commonly be verified by pushing upward on the headliner in the
area shown circled in the previous graphic.
Verify the condition, then using hot glue, secure the 2 large rear tabs of the front sunroof
opening trim ring to the headliner. Follow the steps in the Service Procedure below.
Page 2
November, 2019
Service Procedure
5087146
1. Lower the front portion of the headliner. Only do
those steps in headliner replacement that will lower
the headliner enough to gain access to the 2 large
rear tabs of the front sunroof opening trim ring.
Refer to Headlining Trim Panel Replacement (With
C3U), in SI.
5087148
Note: In the graphic example above, the 2 tabs are
void of any intended adhesive material.
2. Carefully pull down the headliner enough to
inspect the 2 trim ring tabs.
Bulletin No.: 18-NA-189
Bulletin No.: 18-NA-189
November, 2019
Page 3
5087149
3. Apply hot glue to the complete 3 side perimeter of
the both tabs. Allow the glue to dry per
manufacturer’s recommendation.
5087150
4. Reposition the headliner and install removed trim.
Refer to Headlining Trim Panel Replacement (With
C3U), in SI.
5. Verify the condition has been eliminated.
Page 4
November, 2019
Bulletin No.: 18-NA-189
Warranty Information
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.
Labor Operation
Description
Labor Time
1081938*
Re-secure Sunroof Opening Trim Ring Tabs to Headliner
1.0 hr.
*This is a unique Labor Operation for Bulletin use only.
Version
3
Modified
Released June 06, 2018
Revised August 21, 2018 – Added VIN and Date Breakpoints, Removed 2017 Acadia
(VIN N) and 2019 Holden Acadia Models.
Revised November 07, 2019 – Added Holden Acadia Model and 2020 Model Year,
Removed Breakpoints.
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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