Customer Satisfaction Program N202313960 Daytime Running Lamp (DRL) Color Change – 2021 Chevrolet Suburban & Tahoe

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GLOBAL SAFETY FIELD INVESTIGATIONS
DCS5574
URGENT – DISTRIBUTE IMMEDIATELY
Date: November 18, 2020
Subject: N202313960 – Customer Satisfaction Program
Daytime Running Lamp (DRL) Color Change
Models: 2021 Chevrolet Suburban
2021 Chevrolet Tahoe
To: All General Motors Dealers
General Motors is releasing Customer Satisfaction Program N202313960
today. The total number of U.S. vehicles involved is approximately 18,919.
Please see the attached bulletin for details.
Customer Letter Mailing
The customer letter mailing will begin on December 04, 2020.
Global Warranty Management (GWM)
The Required Field Action section on the Investigate Vehicle History (IVH) screen will
be updated November 19, 2020 or sooner. A list of involved vehicles in dealer new
inventory is attached to this message. Please hold all warranty transactions until IVH
has been updated.
END OF MESSAGE
GLOBAL SAFETY FIELD INVESTIGATIONS
Customer Satisfaction Program
N202313960 Daytime Running Lamp (DRL) Color Change
Copyright 2020 General Motors. All Rights Reserved. Page 1 of 6
Release Date: November 2020 Revision: 00
Attention: All involved vehicles that are in dealer inventory must be held and not delivered to customers, dealer
traded, or used for demonstration purposes until the repair contained in this bulletin has been performed
on the vehicle.
This program is in effect until April 30, 2021.
Make Model
Model Year
From To RPO Description
Chevrolet Suburban
2021 2021
Chevrolet Tahoe
Involved vehicles are marked “open” on the Investigate Vehicle History screen in GM Global Warranty Management
system. This site should always be checked to confirm vehicle involvement prior to beginning any required inspections
and/or repairs.
Condition Certain 2021 model year Chevrolet Suburban and Tahoe vehicles, may have a condition in which the
daytime running lamps may shift to a bluer shade of white in its lit appearance. This will remain in effect
until the headlamp cools.
Correction Replace left and right headlamp LED driver module assemblies.
Parts
Quantity Part Name Part No.
2 Module ASM – Headlamp LED Driver 84551653
Reminder: Parts may be removed from Retail Inventory Management (RIM). Dealers should review the affected parts
to confirm RIM managed status. Parts may have quantity limiters in effect.
Warranty Information
Labor
Operation Description
Labor
Time
Trans.
Type
Net
Item
9105293 Replace Left and Right Headlamp LED Driver Module Assemblies 0.9 ZFAT N/A
Service Procedure
1. Partially lift the vehicle to a level that provides access to the front inner wheelhouse liner assembly. Refer to Lifting
and Jacking in SI.
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N202313960 Daytime Running Lamp (DRL) Color Change
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2. Partially remove the left front wheelhouse liner fasteners. Only remove the 8 fasteners forward of the suspension
shock absorber/spring assembly (1-2).
3. Reposition the front section of the wheelhouse liner allowing access to the back of the headlamp assembly. Use care
to not damage the suspension height sensor.
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4. Locate the headlamp LED driver module located on the headlamp housing.
Customer Satisfaction Program
N202313960 Daytime Running Lamp (DRL) Color Change
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5. Remove the 3 module attachment fasteners, use care to not damage the threads on the headlamp housing.
CAUTION: The headlamp LED driver module electrical connector is inside of the headlamp assembly. Do not pull the
driver module away from the headlamp assembly without disengaging the connector, this may damage
the headlamp. You may separate the driver unit up to 40mm (1.6 In.) away from the lamp.
6. Separate the headlamp LED driver module from the headlamp housing no more than 40mm (1.6 In.).
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7. Locate the electrical connector tab and disengage the connector from the module. The tab will be on the inboard side
of the headlamp LED driver module.
8. Move the headlamp LED driver module rearward in the vehicle and remove.
9. Connect the electrical connector to the new headlamp LED driver module, verify the connector is fully seated and the
tab is engaged.
10. Place the new headlamp LED driver module into the headlamp housing.
Important: The headlamp LED driver module attachment fasteners have self-tapping threads, use extreme care to not
cross thread or strip the headlamp housing.
11. Install the 3 headlamp LED driver module fasteners. Use care to not damage the threads in the headlamp housing.
Tighten: 1.1N.m (10 lb in.).
12. Position the wheelhouse liner into the original position.
13. Install the wheelhouse liner fasteners. Tighten: 2.5 N.m (22 lb in).
14. Repeat steps 1-13 on the passenger side of the vehicle with the following note:
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• There is a body harness connector blocking access to the repair area on the right front inner fender. Using a
trim panel removal tool, separate the Christmas tree fastener from the body and reposition the harness out of
the work path. Reinstall the harness to the body after the new headlamp LED driver module is installed.
NOTE: Since excessive blueish color is a subjective evaluation and the DRLs normally have a slight blueish cast, look
for a mismatch between right and left to determine if a headlamp needs replacement. It is extremely unlikely
that both R & L have failed permanently blue. If still in doubt about the degree of blue or you think both sides
are failed, compare DRL color on the subject vehicle to a recent build.
15. With the vehicle lowered and on level ground, activate the Daytime Running Lamps (DRL’s). Step back 20’ from the
front of the vehicle and stand in the center. Observe the illumination color for any blueish white color. If the illumination
displays an unacceptable bluish cast, replace the headlamp assembly as required. Refer to Headlamp Replacement
in SI.
Dealer Responsibility
All new, used, GM Certified Used, courtesy transportation vehicles, dealer shuttle vehicles, etc. in dealers’ possession
and subject to this program must be held and inspected/repaired per the service procedure of this bulletin before
customers take possession of these vehicles. Involved vehicles must be held and not delivered to customers, dealertraded,
released to auction, used for demonstration, or any other purpose.
All GM Certified Used vehicles currently in the dealers’ inventory within the Certified Pre-Owned Inventory System
(CPOIS) will be de-certified and must be held and remedied per the service procedure in this bulletin. Upon submitting
an accepted/paid warranty transaction in the Global Warranty Management (GWM) system, the vehicle can be re-certified
for sale within the CPOIS system, or once again be used in the CTP program.
Customer Satisfaction Program
N202313960 Daytime Running Lamp (DRL) Color Change
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Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle,
or ownership, through April 30, 2021. Customers who have recently purchased vehicles sold from your vehicle inventory,
and for which there is no customer information indicated on the involved vehicle listing, are to be contacted by the dealer.
Arrangements are to be made to make the required correction according to the instructions contained in this bulletin. A
copy of the customer letter is provided in this bulletin for your use in contacting customers. Program follow-up cards
should not be used for this purpose, since the customer may not as yet have received the notification letter.
In summary, through April 30, 2021 whenever a vehicle subject to this field action enters your vehicle inventory you must
take the steps necessary to ensure the program correction has been made before selling the vehicle. In addition, for
vehicles entering your facility for service, you are required to ensure the customer is aware of the open field action and
make every reasonable effort to implement the program correction as set forth in this bulletin prior to releasing the vehicle.
Dealer Reports
For dealers with involved vehicles, a listing has been prepared and will be available through GM GlobalConnect Maxis
Field Action Reports or sent directly to export dealers. The Inventory tab of the dealer reports will contain VINs that
apply to this field action. This information is intended to assist dealers with the PROMPT COMPLETION of these
vehicles. The Customer In-Service tab will contain customer names and addresses from Motor Vehicle Registration
Records. The use of such motor vehicle registration data for any purpose other than follow-up necessary to complete
this field action may be a violation of law in several states.
Courtesy Transportation – For USA & Canada
Courtesy transportation is available for customers whose vehicles are involved in a product program and still within the
warranty coverage period. See General Motors Service Policies and Procedures Manual for courtesy transportation
program details.
Customer Notification
USA & Canada – General Motors will notify customers of this program on their vehicle (see copy of customer letter included
with this bulletin).
Export – Letters will be sent to known owners of record located within areas covered by the US National Traffic and Motor
Vehicle Safety Act. For owners outside these areas, dealers should notify customers using the attached sample letter.
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 tools, equipment, 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 dealer for information on whether your
vehicle may benefit from the information.
We Support
Voluntary Technician
Certification
Customer Satisfaction Program
N202313960 Daytime Running Lamp (DRL) Color Change
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December 2020
This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that your 2021 model year Chevrolet Suburban and Tahoe vehicles may have a condition in which the
daytime running lamps may shift to a blue shaded appearance. This condition will remain in effect until the headlamp
cools.
Your satisfaction with your Chevrolet Suburban or Tahoe is very important to us, so we are announcing a program to fix
this condition.
What We Will Do: Your GM dealer will replace left and right headlamp LED driver module assemblies. This service
will be performed for you at no charge until April 30, 2021. After that, any applicable warranty will apply.
What You Should Do: To limit any possible inconvenience, we recommend that you contact your dealer as soon as
possible to schedule an appointment for this repair. By scheduling an appointment, your dealer can ensure that the
necessary parts will be available on your scheduled appointment date.
If you have any questions or concerns that your dealer is unable to resolve, please contact the appropriate Customer
Assistance Center at the number listed below.
Division Number Text Telephones (TTY)
Chevrolet 1-800-630-2438 1-800-833-2438
Puerto Rico – English 1-800-496-9992
Puerto Rico – Español 1-800-496-9993
Virgin Islands 1-800-496-9994
We truly appreciate you taking the time to remedy your vehicle as we know your time is valuable. We want you to know
that we will do our best, throughout your ownership experience, to ensure that your GM vehicle provides you many
miles of enjoyable driving.
Neelie O’Connor
Global Executive Director
Customer Experience Operations
N202313960

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