GENERAL MOTORS
DCS7521
URGENT - DISTRIBUTE IMMEDIATELY
Date:

June 17, 2026

Subject: UPDATE: N262556930-01 – Customer Satisfaction Program
Transfer Case Microcracking
Updated Parts information
Models: 2026 Chevrolet Colorado
2026 GMC Canyon

This bulletin has been updated to refer dealers to use the VIN and the Electronic
Parts Catalog (EPC) to determine which Transfer Case to order. Please discard
all previous copies of bulletin N262556930.
END OF MESSAGE

Customer Satisfaction Program
N262556930 Transfer Case Microcracking
Release Date:

June 2026

Revision:

01

Update Description: This bulletin has been updated to refer dealers to use the VIN and the Electronic Parts Catalog
(EPC) to determine which Transfer Case to order. Please discard all previous copies of bulletin N262556930.
Attention:

Investigate Vehicle History (IVH) in the GM Global Warranty Management system MUST always
be checked to confirm vehicle involvement and MUST be in OPEN status prior to beginning any
required inspections and/or repairs. DO NOT use Service Information with VIN search, as it will
not verify the VIN eligibility for field actions.
This program is in effect until June 30, 2028.
Model Year

Make
Chevrolet
GMC

Model
Colorado
Canyon

From
2026
2026

To
2026
2026

Investigate Vehicle History (IVH) in the GM Global Warranty Management system MUST always be checked to confirm
vehicle involvement and MUST be in OPEN status prior to beginning any required inspections and/or repairs. DO NOT
use Service Information with VIN search, as it will not verify the VIN eligibility for field actions.
Condition
Correction

Certain vehicles listed above may have a condition in which the transfer case drive chain sprocket is
cracked.
Dealers are to replace the transfer case.

Parts
Quantity
1
1
1
1
1
1
2

Part Name
CASE, TRFER (RPO NQH)
CASE, TRFER (RPO NP0)
CLAMP, TRFER CASE FRT OUTPUT SHF BOOT
GASKET, TRFER CASE ADAP
MOUNT, TRANS
SEALANT

Part No.
Refer to EPC
Refer to EPC
84308104
86816628
84653921
19333512 US /
10953480 CAN
88865601 US /
19421425 CAN

DEXRON VI

Note: Use the VIN and the GM Electronic Parts Catalog (EPC) to determine which Transfer Case to order.
If you have one of the involved vehicles, you must place a CSO order and add a SPAC case with the appropriate VIN.
Due to limited inventory, VIN Verification will be conducted on the vehicle identification number you input and if it isn’t an
OPEN Recall in IVH then the order will be cancelled daily. All orders except SPAC will be cancelled.
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
9108438

Description
Transfer Case Assembly Replacement
ADD: w/ RPO UXA
ADD: w/ RPO NP0

Labor
Time
3.0
0.4
0.1

Trans.
Type

Net
Item

ZFAT

N/A

Note: The above labor time(s) are published direct from the Labor Time Guide.
Service Procedure
1.

Replace the Transfer Case. Refer to Transfer Case Assembly Replacement in SI.

Dealer Responsibility
All new, used, GM Certified Pre-Owned (CPO), courtesy transportation vehicles, dealer shuttle vehicles, CarBravo, etc.
in dealers' possession and subject to this field action 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, dealer-traded, released to auction, used for demonstration, or any other purpose.
Page 1 of 3

Customer Satisfaction Program
N262556930 Transfer Case Microcracking
All GM Certified Pre-Owned (CPO) vehicles currently in the dealers’ inventory within the SHIFT Digital system 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 SHIFT Digital system, or once again be used in the Courtesy Transportation Program.
Dealers are to service all vehicles subject to this program at no charge to customers, regardless of mileage, age of vehicle,
or ownership, through the end date as noted in the Attention box. 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, whenever a vehicle subject to this program enters your vehicle inventory or is in your facility for service
through the end date as noted in the Attention box, you must take the steps necessary to be sure the program correction
has been made before selling or releasing the vehicle.
Dealer Reports – For USA
For dealers with involved vehicles, a listing has been prepared and will be available through GM Global Connect Maxis
Field Action Reports or GWM Field Action Batch Search Report. 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
USA - For repairs covered under this Field Action, Courtesy Transportation can be made available ONLY if the
customer/vehicle qualify for Courtesy Transportation per Bulletin 07-00-89-037.
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. Refer to the most current Home Office Letter (YYYY-604) on the Courtesy
Transportation Program for details.
Customer Notification
USA & Canada - General Motors will notify customers of this program on their vehicle (see copy of sample 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

Page 2 of 3

Customer Satisfaction Program
N262556930 Transfer Case Microcracking

This notice applies to your vehicle, VIN: ________________________________
Dear General Motors Customer:
We have learned that your GM vehicle may have a condition in which your transfer case drive chain sprocket is
cracked.
Your satisfaction with your vehicle is very important to us, so we are announcing a program to prevent this condition or,
if it has occurred, to fix it.
What We Will Do: Your GM dealer will replace your transfer case. This service will be performed for you at no charge
until June 30, 2028. 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.
You may schedule your vehicle for repair using the QR code below. For more information about your vehicle, or if you
have questions or concerns that your dealer is unable to resolve, please visit gm.com/service. You can also use your
preferred voice assistant (for example, “Please go to GM.com”), or call the Buick, Chevrolet or GMC Customer
Assistance Center at 1-866-467-9700. For Cadillac, please call 1-800-333-4223.
For the hearing or speech impaired, please contact our Customer Assistance Center using the Telecommunication
Relay Service by dialing 711 then providing the appropriate Customer Assistance Center number for your vehicle.
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
Scan here to
locate a dealer.

N262556930

Page 3 of 3