21NA013

Bulletin No.:
Service Bulletin
Date:
21-NA-013
December, 2021
TECHNICAL
Subject:
Rattle or Ticking Noise Heard Coming from B-Pillar Area
Attention: This bulletin supplies information on repairing and eliminating a B-Pillar noise. If noise
is verified to be coming from one of the roof rail assist handles, refer to bulletin #
19-NA-013. If the noise cannot be eliminated completing this bulletin, refer to bulletin
#19-NA-235 as another possible cause.
Brand:
Model:
GMC
Terrain
Involved Region or Country
Model Year:
Date Breakpoint:
from
to
from
to
2020
2021
SOP
December
1, 2020
Engine:
Transmission:
All
All
North America, Middle East.
Additional Options (RPOs)
Condition
Some customers may comment on hearing a rattle or ticking type noise at B-Pillar area,
on either side of the vehicle.
Cause
The cause of the condition may be spot welds that were located out of position at the
upper B-Pillar.
Correction
Verify the Condition and repair the vehicle following the steps in the Service Procedure
below.
Copyright 2021 General Motors LLC. All Rights Reserved.
Page 2
December, 2021
Bulletin No.: 21-NA-013
Service Procedure
Note: It may be necessary to park the vehicle in
sunlight to heat the body panels to duplicate the
complaint, and also to confirm the noise is eliminated
during testing and after repair. Vehicles parked inside,
or in the shade or cool locations, may not exhibit the
issue until they heat up.
4748485
Warning: This vehicle is equipped with a
Supplemental Inflatable Restraint (SIR) System.
Failure to follow the correct procedure could cause
the following conditions:
•
•
•
•
Air bag deployment
Personal injury
Unnecessary SIR system repairs
In order to avoid the above conditions,
observe the following guidelines:
Refer to Master Electrical Components List in
order to determine if you are performing
service on or near the SIR components or the
SIR wiring.
•
If you are performing service on or near the
SIR components or the SIR wiring, disable the
SIR system. Refer to Disabling the SIR
System.
1. Detach and partially remove the center pillar upper
trim panel (3) on the affected side(s). Refer to
Center Pillar Upper Trim Panel Replacement, in SI.
Bulletin No.: 21-NA-013
December, 2021
5710821
2. Locate the sheet metal area at the top of the
B-Pillar, shown in the graphic above
3. Locate the gaps in the sheet metal, #3 and #4.
Page 3
5710826
5. Cut pieces from a scrap piece of metal stock, rod
or bolt that is slightly thicker than the screwdriver
used to eliminate the noise.
6. Remove the screwdriver and insert the shims
made in step #5. The shims should be tight enough
to require them to be tapped into place and should
stay in place on their own, once installed.
7. Verify the noise is still eliminated. If not, adjust the
shims until the noise is gone.
5710823
Important: The screwdriver should be large enough to
fill the gap, to be effective.
4. Carefully insert and wedge two screwdrivers into
the two gaps. Confirm the noise is eliminated.
• If the noise is NOT eliminated, DO NOT
complete the repair below, but continue with
further SI diagnostics to pinpoint the cause.
• If the noise IS eliminated, continue to step #5
and complete this repair.
5710825
8. Inject SEM 39337 Door Skin & SMC Adhesive*, or
equivalent, into the opening to hold the shims in
place.
9. Allow the structural panel adhesive to set
according to product recommendations.
Page 4
December, 2021
Bulletin No.: 21-NA-013
4748485
10. Once adhesive has cured, reinstall the center pillar
upper trim panel. Refer to Center Pillar Upper Trim
Panel Replacement, in SI.
* We believe this source and their products to be
reliable. There may be additional manufacturers of
such products/materials. General Motors does not
endorse, indicate any preference for, or assume any
responsibility for the products or material from this firm
or for any such items that may be available from other
sources.
Parts Information
For ordering adhesive material, contact SEM Customer
Care at #866–327–7829, or
[email protected], or at SEM Tech Support
at #800-831-1122, or [email protected].
Causal
Part
Description
Part
Number
Qty
N/A
SEM Door Skin &
SMC Adhesive
(7oz)*
39337
$3.00 U.S.
$4.50
Canada
*There is enough material to do approximately 14 vehicles.
Store the remaining material for future use.
Bulletin No.: 21-NA-013
December, 2021
Page 5
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
1481478*
Install Metal Wedge and Adhesive to B-pillar Behind Trim
Panel
0.6 hr
Add:
Repeat Repair on Opposite Side
0.4 hr
*This is a unique Labor Operation for Bulletin use only.
Version
4
Modified
Released January 22, 2021
Revised February 09, 2021 – Updated the Breakpoint.
Revised September 23, 2021 – Added 2021 Model Year, Added a Note to the Start of the
Service Procedure and Updated Repair Steps # 4 – 6.
Revised December 15, 2021 – Added Warning to Start of Service Procedure.
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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