21-NA-026

Service Bulletin
Bulletin No.:
21-NA-026
Date:
July, 2023
INFORMATION
Subject:
Information on Accessory All-Weather Floor Liners and Flat Mats Warped or
Mis-shapen
Brand:
Model:
Buick
GM
Passenger
Cars and
Light Duty
Trucks
Cadillac
Chevrolet
GMC
Model Year:
from
VIN:
to
2024 and Prior
from
to
—
—
Engine:
Transmission:
All
All
Involved Region or Country
North America
Additional Options (RPOs)
Equipped with any of the following all-weather liners and all-weather flat mats, including
RPOs: RIA, AAK, RIB, VAV, VKN or VLI
Condition
5721505
Note: An example of a warped part is shown in the graphic above.
Dealership personnel/customers may comment that the accessory all-weather floor
liners/flat mats appear to be warped and do not fit the vehicle as intended.
Cause
The cause of the warped part(s) is the result of the packaging and the shipping process.
Excess handling and extreme conditions may result in deformed parts.
Correction
Attempt to reshape the all-weather floor liner/flat mats following the steps in the Service
Procedure below.
In cases where the part reshaping is not successful, re-order and return the warped parts
to ADI (U.S.). In Canada, submit a claim through Parts Workbench and return as “New
Defective (Impedes normal function).”
Copyright 2023 General Motors LLC. All Rights Reserved.
Page 2
July, 2023
Bulletin No.: 21-NA-026
Service Procedure
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.
1. Remove the affected all-weather floor liner/flat
mat(s) from the vehicle.
6384937
If mat has rolled outward and no longer fits the floor
space – use heat gun on the outside of the mat in
the affected area, being careful not to get too close
to the mat material that it melts/burns but close
enough to manipulate the mat to bend back
straight. Once affected area has started to
straighten, immediately go to vehicle and place
mat in location to help mold to floor area. This may
take multiple attempts at getting it to correctly fit.
3. Unroll and position the mat(s) in the vehicle, to
re-evaluate the fit again.
5721506
2. If mat has rolled inward – flip mat upside down and
use heat gun on the affected area (see below),
being careful not to get too close to the mat
material that it melts/burns but close enough to
manipulate the mat to bend back straight. Once
mat has straightened, leave mat to cool (approx. 5
min). Trial mat in vehicle – this may take multiple
attempts to manipulate the material to get it to fit
into position on the floor.
Bulletin No.: 21-NA-026
July, 2023
Page 3
5721507
• If the mat(s) have an acceptable fit to the
vehicle, return the vehicle to the customer.
• If the mat(s) still display an unacceptable gap, it
will be necessary to replace the part(s).
Parts Information
In cases in which the reshaping does not solve the
issue, use the VIN and refer to the GM Electronic Parts
Catalog (EPC) to determine the proper all weather liner/
flat mat(s) part(s) to order.
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
0588608*
Reshape Accessory All
Weather Floor Liner/
Flat Mats
0.3 hr
*This is a unique Labor Operation for bulletin use only.
Version
3
Modified
Released January 29, 2021
June 21, 2022 – Added the 2022-2023 Model Years and an Important statement.
Revised July 17, 2023 – Added the 2024 Model Year, updated the Service Procedure,
and increased Labor Time.
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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