Bulletin No.: 25-NA-339

Service Bulletin

Date: November, 2025

INFORMATION
Subject:
Brand:

Cadillac

Engine Oil Change Mobil 1 Supercar 0W40 DexosR Customer Pay Maintenance
Model:

Build Date:

from

to

Escalade
Models

2021

2024

Silverado
1500

2021

2021

2022

2022

Silverado
1500 LTD
(RPO J21,
VIN Digit 5 =
W/Y)

Chevrolet

Model Year:

Silverado
1500 New
(RPO J22,
VIN Digit 5 =
A/D)
Silverado
1500
Silverado
2500HD/
3500HD
Suburban

from

to

—

—

Engine:

Transmission
:

L87

—

2023
2024
2021

Tahoe
Sierra 1500
Sierra 1500
Limited (RPO
J21, VIN Digit
5 = 8/9)
GMC

Sierra 1500
New (RPO
J22, VIN Digit
5 = H/U)

2021

2021

2022

2022

Sierra 1500

2023

Sierra
2500HD/
3500HD

2021

2024

Yukon Models
Involved Region or Country

U.S. ONLY

Condition

Under Field Action N252494000/N252494001, the service procedure includes performing
a PICO test on vehicle engines within the identified suspect VIN population. If the engine
passes the PICO test, the engine oil will be changed from 0W20 to Mobil 1 Supercar
0W40 dexosR. From that point forward, the engine must use 0W40 dexosR oil products
for all future oil change services.

Copyright 2025 General Motors. All Rights Reserved.

Page 2

November, 2025

Bulletin No.: 25-NA-339

For oil changes following the initial recall service with Mobil 1 0W40 Supercar, GM is
announcing the availability of Mobil 1 FS 0W40 dexosR (OIL, ENG SYNTHETIC 0W40
MOBIL 1) at a significantly more competitive price, closely aligned with what customers
typically paid for traditional 0W20 oil. This product is available today and ready for use on
customer pay maintenance visits.

Cause

GM expects to have enough Mobil 1 FS 0W-40 dexosR, but there may be occasional
shortages as production and distribution ramp up. If a customer needs an oil change
during this time, and has a GM dealership complete the oil change, the dealer can
temporarily use Mobil 1 Supercar 0W-40 until Mobil 1 FS 0W40 is available and can
claim up to a $50 credit using the labor operation provided in this bulletin. We anticipate
this bulletin to be removed at the end of December 2025 or once Mobil 1 FS 0W-40
dexosR is consistently available.

Correction

Important: This credit should be applied to the repair order ensuring the price of a
customer pay oil remains aligned with traditional customer pay 0W20 oil changes.
How this $50 cost differential coverage works:
• Dealers that cannot obtain Mobil 1 FS 0W40 dexosR oil due to supply constraints, can
perform the customer pay oil change using Mobil 1 Supercar 0W40 dexosR oil at the
existing price.
• Dealer should utilize the labor operation specified below for reimbursement of the $50
credit. This credit should be applied to the repair order ensuring the price of a
customer pay oil remains aligned with traditional customer pay 0W20 oil
changes.
For Customers who have already paid full price for Mobil 1 Supercar 0W-40 dexosR can
submit a reimbursement form to receive the $50 credit. Note: Maintenance events that
were not paid by the customer directly with a form of cash are not eligible for this
reimbursement. This includes oil changes covered by pre-paid maintenance plans or paid
for using My GM Reward Points.

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.

Important Note
If Mobil 1 FS 0W-40 is available through local distributors, it should be ordered and used. The $50 credit is intended
as a temporary solution until supply stabilizes.
GM will verify that vehicles using the credit meet the following criteria:
• VIN is included in the L87 Field Action N252494000/N252494001
• Field Action Remedy has been Completed for N252494000 or N252494001 (Engine now requires 0W40
dexosR per oil cap)
• Proper mileage intervals between oil changes
• Repair Order (RO) and proof of payment (receipt) exist for a customer-pay oil change, and Mobil 1 Supercar
0W40 dexosR was used (PN 19432866, 19432867 or 19541248 MUST be on Repair Order)

Parts Information
The part numbers below are for reference only, they should not be submitted on the claim, but they should be on the
repair order.
Causal Part

Description

Part Number

N/A

OIL, ENG SYNTHETIC 0W40 MOBIL 1
1QTX6

88862479 (US)

N/A

OIL, ENG SYNTHETIC 0W40 MOBIL 1
55GAL

88862480 (US)

N/A

OIL, ENG SUPERCAR 0W40 MOBIL 1
1QT

19432866 (US)

N/A

OIL, ENG SUPERCAR 0W40 MOBIL 1
55GAL

19432867 (US)

Qty

As Required

Bulletin No.: 25-NA-339

November, 2025

Page 3

Warranty Information
Labor Operation

Description

Labor Time

Trans. Type

Net Item

0680008

Oil Change Credit
(Using Mobil 1 Supercar
0W40 DexosR)

N/A

ZREG

*

N/A

—

**

0680028

Customer
Reimbursement
Approved
For USA- and Canada Dealers Only

*Submit the dollar amount credit to Net Item Miscellaneous, not to exceed $50.00 USD.
**For customers who previously paid for an oil change using Mobil 1 Supercar 0W40 DexosR and that service was completed
between (date of recall completion) and (11/07/2025), have the customer complete the reimbursement form below and present it
to your dealer with all required documents. Submit in Net/Customer Reimbursement the amount the customer paid for Mobil 1
0W40 above the customary amount for 0W20 (parts only) not to exceed $50 USD. This is the preferred reimbursement method,
however, if the above is not convenient, the customer may mail the completed reimbursement form and all required documents
to Reimbursement Department, PO Box 33170, Detroit, MI 48232-5170. The completed form and required documents must be
presented to your dealer or received by the Reimbursement Department by [December 31, 2025], unless state law specifies a
longer reimbursement period.
General Motors Product Field Action
Customer Reimbursement Request Form
This section to be completed by customer (please print)
Customer Name: ______________________________________
Street Address or P. O. Box Number: ______________________________________
City:
_________________________________
_____

State:
________________________________
______

Zip Code:
________________________________
______

Preferred Contact Telephone Number (include Area Code): ______________________________________
Preferred Contact Email Address: ______________________________________
Date Request Form and Supporting Documentation Submitted to Dealer: ______________________________________
Vehicle Identification Number of Involved Vehicle: _______________________________________
Mileage at Time of Repair: ______________________

Date of Repair:
_______________________

Amount of Reimbursement Requested: $50.00
The following documentation MUST accompany this request form.
Original or clear copy of all receipts, invoices and/or repair orders that show:
• The name and address of the person who paid for the repair.
• The Vehicle Identification Number (VIN) of the vehicle that was repaired.
• Description of problem, the repair performed, date of repair and who performed the repair.
• The total cost of the repair expense that is being requested.
• Proof of payment for the repair in question and the date of payment.
My signature to this document attests that all attached documents are genuine and I request reimbursement for the expense I
incurred for the repair covered by this letter
Customer's Signature: _________________________________________________________________
Submit this request form and the required documents to your GM dealer for processing. All reasonable and customary costs to
correct the conditions described in the letter that came with this form will be considered for reimbursement. If your request is
approved, you will receive a check from your dealer. If your request is denied, you will receive a written explanation for the denial
from your dealer. If your request is incomplete, your dealer will advise you what documentation is needed to complete the
request and offer you the opportunity to resubmit the request when the missing documents are available. If you have any
questions about this process or have waited 30 or more days for a response from your dealer, please contact the GM Customer
Assistance Center at 1-866-467-9700.

Page 4

November, 2025

Bulletin No.: 25-NA-339

This section to be completed by dealer (please print)
Bulletin No.: __25NA-339________

Request Approved:
_____________

Date:
_______________________

Request Denied:
______________

Date: ___________________

Reviewed By:
__________________________________________________
___

Amount: $__50.00______

Reason: __________________________________________________________________________
If denied, please provide a copy of this form to the customer and retain original for your files
Version

1

Modified

Released November 06, 2025

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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