GENERAL MOTORS
DCS 7516
URGENT - DISTRIBUTE IMMEDIATELY
Date:

June 10, 2026

Subject: N262560680 - Service Update
Transmission Control Body Missing Bolt
Models: 2026 Chevrolet Silverado 2500 HD/3500 HD
2026 GMC Sierra 2500 HD/3500 HD
General Motors is releasing Service Update N262560680 today. The total
number of U.S. vehicles involved is 7.
What Should Dealers Do: Dealers should review IVH, or the Dealer Maxis reports
for open VINs in their inventory. Dealers can view the attached bulletin, and it
will also be displayed in Service Information tomorrow.
The Stock VIN list of vehicles in dealer inventory or in-transit is attached to this
message. Note: this list is only accurate at the time of report creation and all
VINs should be validated in IVH prior to repair.
The Inventory tab of the Open Vehicle Report will contain Service Update Bulletin
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 not contain Service Update Bulletin VIN data because the intent of a
Service Update Bulletin is to not inconvenience a customer with a special trip for
service. Service Update Bulletins are to be completed when the customer is in
for a regularly scheduled visit.

END OF MESSAGE

Service Update
N262560680 Transmission Control Body Missing Bolt
Release Date:
Attention:

June 2026

Revision:

00

Please note: There are only 7 VINs involved in this field action. The VINs are located in the VIN
Reference table below.
This service update includes vehicles in dealer inventory and customer vehicles that return to the
dealership for any reason. This bulletin will expire June 2028.
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.
Model Year

Make
Chevrolet
GMC

Model
Silverado 2500 HD/3500 HD
Sierra 2500 HD/3500 HD

From

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 bolts for the transmission control valve
body may be loose or missing.
Dealers will retorque or replace the suspect valve body bolts.

Parts
Quantity
As Req’d
1
1
1
15

Part Name
Bolt, C//VLV UPPR BODY
Filter Kit, A/TRNS Fluid (W/Seal)
Seal, EXH SYS (Metal O Ring Style) (L8T)
Seal, EXH SYS (Donut Style) (L8T)
Fluid, A/Trans

Part No.
11548794
24298004
15077362
20987829
19352619

Reminder: Parts required to complete this recall are to be obtained from General Motors Customer Care and Aftersales
(GMCCA). Parts may be removed from SPRINT and Retail Inventory Management (RIM) and be non-returnable. Dealers
should review the affected parts to confirm RIM managed status. Parts may have quantity limiters in effect. There are a
small number of vehicles anticipated that will need this fix. Dealers are encouraged not to order these parts for use as
shelf stock.
Warranty Information
Labor
Operation
9108481

Description
Retorque Valve Body Bolts
L5P
L8T

Labor
Time

Trans.
Type
ZFAT

Net
Item
N/A

1.8
2.4

VIN Reference
1GB2KLE77TF286624
1GT4UPEY3TF286697
1GC4KNEY5TF283682
1GC4KNE71TF275621
1GC1KLE72TF286733
1GT3UTEY0TF280540
1GT4UPEY5TF279637
Service Procedure
1.

Remove the transmission fluid pan and filter. Refer to Automatic Transmission Fluid, Fluid Pan and/or Filter
Replacement in SI.

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Service Update
N262560680 Transmission Control Body Missing Bolt

6985470
Note: Please note the location of the harness retaining bolts. The middle bolt is longer than the outside bolts.
2.

Remove the three bolts circled above retaining the wiring harness and relocate it out of the way.

7155314
3.

Verify the two valve body bolts circled above are torqued to 9 NM (80 in-lbs). Install new bolt(s) if missing.

4.

Reposition the wiring harness and torque the three harness bolts to 9 NM (80 in-lbs).

5.

Install a NEW transmission filter and pump seal before reinstalling the transmission fluid pan. Refer to Automatic
Transmission Fluid, Fluid Pan and/or Filter Replacement in SI.

6.

Fill the transmission to the proper level with NEW transmission fluid. Refer to Transmission Fluid Fill Procedure in
SI.

Dealer Responsibility
Whenever a vehicle subject to this service update 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 service update correction
has been made before selling or releasing the vehicle.
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.

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Service Update
N262560680 Transmission Control Body Missing Bolt
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.
Dealer Reports – For USA and Export
The Inventory tab of the Open Vehicle Report will contain Service Update Bulletin VINs that apply to this field action.
This information is intended to assist dealers with the PROMPT COMPLETION of these vehicles. The Customer InService tab will not contain Service Update Bulletin VIN data because the intent of a Service Update Bulletin is to not
inconvenience a customer with a special trip for service. Service Update Bulletins are to be completed when the
customer is in for a regularly scheduled visit.

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

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