Bulletin No.:

Service Bulletin

Date:

17-NA-384
March, 2021

TECHNICAL
Subject:
Brand:
Cadillac

Squeak, Rattle or Creak Coming from Second Row/Rear Seat Area
Model:
XT5

Model Year:
from

to

2017

2021

XT6

2020

2021

GMC

Acadia (VIN N)

2017

2021

Holden

Acadia

2019

2019

VIN:
from

Engine:

Transmission:

All

All

to

Involved Region or Country

North America, Europe, Russia, Middle East, Israel, Japan, South Korea and Egypt.

Condition

Some customers may comment on hearing a squeak, rattle or creak coming from the
second row/rear seat area. The right 40% seat is more prone to this condition, however
the left 60% seat could be affected.
The cause of the condition may be either of the following:

Cause

4911773

Note: The “winking” is caused by excessive overlap of body panels and, as shown is the
graphic above, the sheet metal holes are offset. This is most commonly found at the right
rear fastener location of the right rear seat, or the left rear fastener of the left rear seat.
• Possible "winking" condition of right rear 40% seat floor pan outboard track rear bolt
hole, or the left rear 60% seat floor pan outboard track rear bolt hole.
• A seat track synchronization/torque condition may require a torque sequencing of the
seat attachment bolts, on either seat.

Correction

Copyright 2021 General Motors LLC. All Rights Reserved.

Note: Perform the “winking” inspection, and repair procedure as necessary first, prior to
performing the torque procedure.
For vehicles exhibiting the condition, follow the Service Procedure below to inspect for
and correct the winking condition, and also complete the torque sequencing procedure.

Page 2

March, 2021

Bulletin No.: 17-NA-384

Service Procedure

5403437

1. Verify which rear seat exhibits the condition: the
right rear 40% seat, (1) and/or the left rear 60%
seat. (2)
Important: Follow the seat attachment bolts removal
sequence detailed in step # 2 below:
2. Remove the affected right (1) and/or left (2) rear
seat. Refer to Rear Seat Removal and Installation
(40%) and/or Rear Seat Removal and Installation
(60%) in SI,
2.1. Adjust the seat to full rearward position.
2.2. Loosen the outboard front attachment bolt,
then the inboard bolt.
2.3. Adjust the seat to full forward position.
Note: It is important that the tracks remain locked until
both rear bolts are re-torqued.
2.4. Ensure that both seat tracks are locked.
2.5. Loosen the outboard rear attachment bolt,
then the inboard bolt.
3. inspect the right outboard rear seat fastener
location of the right rear seat and/or the left
outboard rear seat fastener location of the left rear
seat for possible “winking” condition:

4911773

• If “winking” condition DOES exist, continue
ahead to step #4 and remove sheet metal
material.

Bulletin No.: 17-NA-384

March, 2021

4911781

Note: In the graphic example above, the sheet metal is
still offset, but the nut is centered enough to avoid
contact of the seat bolt to the sheet metal.
• If “winking” condition DOES NOT exist, jump
ahead to step #6 and follow the torque
sequence procedure.

Page 3

4911785

4. Using a dremel, or suitable tool, grind a small
amount of material from the floor sheet metal
opening. Grind only enough of the overlapping
metal to allow clearance for the seat bolt.
5. Use an air gun to blow out any metal debris in the
nut and hole area.

5403437

Page 4

March, 2021

Important: Again, follow the seat attachment bolts
sequencing detailed in step #6 below.
6. Reinstall the removed rear seat. Refer to Rear
Seat Removal and Installation (40%) and/or Rear
Seat Removal and Installation (60%) in SI,
6.1. Ensure seat is in full forward position.
6.2. Ensure both seat tracks are locked evenly in
place.
6.3. Tighten the rear inboard bolt to specified
torque.
6.4. Tighten the rear outboard bolt to specified
torque.
6.5. Adjust the seat to full rearward position.
6.6. Ensure that both seat tracks are locked.
6.7. Tighten the front inboard bolt to specified
torque.
6.8. Tighten the front outboard bolt to specified
torque.
7. Road test vehicle to ensure noise has been
eliminated.
• If noise persists, continue to ahead to step #8.
• If noise is NOT present, no further action is
required.

Bulletin No.: 17-NA-384

8. Adjust the affected seat fully forward.

4911791

9. Using a brush, apply AC Delco Super Lube P/N
12371287 (In Canada, P/N 10953437) (In
Australia/New Zealand, P/N 19417625) to the
inboard and outboard seat tracks (1):

4911795

Note: Apply grease at the arrowhead locations (1) shown above.

Bulletin No.: 17-NA-384

March, 2021

Page 5

4911799

9.1. Apply the Super Lube on BOTH the outer
surface (2) and inner surface (3) of the lower
channel, approximately a 2 inch length from
the rear edge (1).
9.2. Remove excess grease from any unaffected
surfaces.

9.3. Cycle the seat fore and aft a few times to
distribute the grease.
10. Road test vehicle to ensure noise has been
eliminated. If noise persists, replace the affected
outboard rear seat track, following the previously
noted torque sequence procedure.

Parts Information
No parts are normally required for this repair.

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

7080518*

Remove and Reinstall Rear 40% Seat Assembly, Sequence
Fasteners

0.6 hr

ADD:

Grind Material from Floor Sheet Metal

0.3 hr

ADD:

Lubricate Inboard/Outboard Seat Tracks

0.2 hr

7086338*

Remove and Reinstall Rear 60% Seat Assembly, Sequence
Fasteners

0.6 hr

ADD:

Grind Material from Floor Sheet Metal

0.3 hr

ADD:

Lubricate Inboard/Outboard Seat Tracks

0.2 hr

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

Page 6

March, 2021

Bulletin No.: 17-NA-384

Version

5

Modified

Released December 04,2017
Revised September 09, 2019 – Added repair Information for 60% Seat and Updated
Warranty Information.
Revised October 17, 2019 - Added 2019 Holden Acadia to Model section.
Revised December 18, 2019 – Added Cadillac XT6 Model, Added 2020 Model Year to
Cadillac XT5 and Acadia.
Revised March 09, 2021 - Added 2021 Model Year, except Holden

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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