Service Bulletin

Bulletin No.:

23-NA-085

Date:

May, 2023

TECHNICAL
Subject:

Service Restraint System Message / Air Bag Warning MIL / DTC B14DC Set
This bulletin replaces PIT5885B. Please discard PIT5885B.

Brand:

Model:

Cadillac

Escalade Models

Chevrolet
GMC

Suburban
Tahoe Models

Model Year:

VIN:

from

to

from

to

2021

2023

-

-

Engine:

Transmission:

All

All

Yukon Models

Involved Region or Country

Middle East and North America

Condition

Some customers may comment on a Service Restraint System Message and/or SIR
Warning MIL intermittently illuminated. When checking for DTC's, a B14DC will be found.

Cause

The cause of the condition may be the driver's seat side airbag connector coming in
contact with the seat back cushion. Thus, during movement from the driver, or while
adjusting the seat, it may cause the airbag connector terminals to temporarily lose
contact, causing the issue.

Correction

Review the procedure below to correct the vehicles condition.

Important: Service agents must comply with all
International, Federal, State, Provincial, and/or
Local laws applicable to the activities it performs
under this bulletin, including but not limited to
handling, deploying, preparing, classifying,
packaging, marking, labeling, and shipping
dangerous goods. In the event of a conflict between
the procedures set forth in this bulletin and the
laws that apply to your dealership, you must follow
those applicable laws.

Service Procedure
To correct this concern, perform the following
procedure to the seat back foam. Listed below are two
service procedures depending on the model:

Service Procedure for Tahoe/Suburban/Yukon
Models:
1. Move the driver seat to the full rearward position
2. Tilt seat back forward for better access to rear of
seat back.
3. Disconnect the battery.
Copyright 2023 General Motors LLC. All Rights Reserved.

5967233

Page 2

May, 2023

Bulletin No.: 23-NA-085

Caution: To avoid possible zipper damage to the
cover, carefully follow the video and Notes in the
Service Procedure.
4. Unzip both sides of the seat back trim cover,
disengage the lower J-channel retainer and lay the
cover forward over the seat back. Refer to Front
Seat Back Cover and Pad Removal and
Installation, in SI.

5967228

6. Zip tie the airbag connector harness to the seat
frame. If there is already a zip tie installed, no
further repairs are needed. Continue diagnosis
referring to the proper procedures within SI.

5967221

5. On the lower right side of the seat, pull back the
seat cover to expose foam and locate the seat
airbag connector.

6341998

Note: For Model Year 2023, check for the zip tie to
already be installed from the plant. If zip tie is installed,
no further repairs needed.

5967235

Note: Do not replace the seat airbag connector unless
instructed by an open Field Action as identified in
Investigate Vehicle History (IVH).

Bulletin No.: 23-NA-085

May, 2023

5967225

7. Cut 2 pieces of 1" wide double-sided Velcro tape P/
N 189590, or equivalent, one 200 mm (7.84 in.)
length and the other 180 mm (7.08 in) length.

Page 3

5967233

Caution: To avoid possible zipper damage to the
cover, carefully follow the video and Notes in the
Service Procedure.
9. Reinstall the seat back cover. Refer to Front Seat
Back Cover and Pad Removal and Installation,
in SI.
10. Reconnect the battery.

Service Procedure for Escalade:
1. Move the driver seat to the full rearward position.
2. Tilt seat back forward for better access to rear of
seat back.
3. Disconnect the battery.

5967222

7.1. As shown in the graphic above, secure the 200
mm Velcro horizontally (1), compressing the
foam 50%.
7.2. As shown in the graphic above, secure the 180
MM Velcro vertically (2), compressing the
foam 50%.
8. Reposition foam and seat back cover, ensuring
airbag connector has clearance to all foam and
material.
5967240

4. Remove the driver front seat back finish panel (1).
Refer to Front Seat Back Finish Panel
Replacement, in SI.

Page 4

May, 2023

Bulletin No.: 23-NA-085

5966735

5. On the lower right side of the seat, pull back the
seat cover to expose foam and locate the seat
airbag connector.

5967228

6. Zip tie the airbag connector harness to the seat
frame. If there is already a zip tie installed, no
further repairs are needed. Continue diagnosis
referring to the proper procedures within SI.

5967235

Note: Do not replace the seat airbag connector unless
instructed by an open Field Action as identified in
Investigate Vehicle History (IVH).

6341998

Note: For Model Year 2023, check for the zip tie to
already be installed from the plant. If zip tie is installed,
no further repairs needed.
7. With a felt tip pen or suitable marker, draw lines to

Bulletin No.: 23-NA-085

May, 2023

indicate locations for foam material removal and
slits:

Page 5
mm (1.90 in) (2) from the bottom seam of the
seat cover foam, and 25 mm (0.98 in.) (3)
from the edge seam of the foam.

5967236

7.1. . As shown in the graphic above, mark
locations for a square: top line 125 mm (4.92
in) (1) from the bottom of the seat cover foam,
right line 40 mm (1.57 in) (2) from the left
edge of the foam, and bottom line 55 mm
(2.17 in) (3) from the bottom of the seat
cover foam.
7.2. Also shown in the graphic above, mark a
vertical 40 mm (1.57 in) slit (4) located 62 mm
(2.44 in) (5) from the left edge of the foam and
70 mm (2.75 in) (6) from the bottom of the
seat cover foam.

5967238

7.4. As shown in the graphic above, mark a line
from the bottom corner of the square (1)
creating a lower leg, angling and arcing down
to 20 mm (0.80 in) (2) from the bottom of
the foam.
Note: For best results, perform cuts with multiple
passes.
8. Using an X-Acto hobby knife, or other suitable
cutting tool, cut along the square lines drawn and
remove the foam material for clearance of the
connector and wire.
9. Cutting along the marked line, remove material
from the lower leg of the foam
10. Cut 2 slits, one at the 40 mm marked line, the other
at the 25 mm marked line.

5966742

7.3. As shown in the graphic above, on the
inboard side panel of the foam, mark a
horizontal 25 mm (0.98 in) slit (1) located 48

5967225

Page 6

May, 2023

Bulletin No.: 23-NA-085

11. Cut a 100 mm (3.94 in.) length of 1" wide double
sided Velcro tape P/N 189590, or equivalent.

5967242

5967219

17. Install Velcro though the 25 mm slit (2), and secure
compressing the foam 50 %.

12. Install Velcro though the 40 mm slit (1) , and
secure compressing the foam 50 %.
13. . Reconnect the battery.

5966747

5967220

14. Tilt the seat back fully rearward.
15. Disconnect the battery.
16. Cut a 180 mm (7.0 in.) length of 1" wide double
sided Velcro.

18. Reposition foam and cover material, ensuring
airbag connector has clearance to all foam and
material.
19. Reconnect the battery.

Bulletin No.: 23-NA-085

May, 2023

Page 7

5967240

20. Reinstall the driver front seat back finish panel (1).
Refer to Front Seat Back Finish Panel
Replacement, in SI.

Parts Information
Description

Part
Number

Material
Allowance

Double Sided Velcro Tape

189590

$5.00

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

2086778*

Rear of Driver Seat Back
connector inspection

0.3 hr

Add

Access Rear of Driver Seat
Back, Trim Seat Foam and/
or Install Velcro Tape

0.3 hr

*This is a unique Labor Operation for Bulletin use only.

Version

1

Modified

Released May 05, 2023

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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