Service bulletin 25-NA-100
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Service bulletin |
|---|---|
| NHTSA id | 11019503 |
| Published by NHTSA | 2025-06-12 |
| Manufacturer's number | 25-NA-100 |
| Manufacturer's date | 2025-04-18 |
| NHTSA component | ENGINE |
NHTSA's summary
This warranty administration bulletin provides policy information on vehicles outside of a California Emissions State who move to and register their vehicle in a California Emission State may be entitled to the 7 year, 70,000-mile Emission Select State Component Limited Warranty.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
Components
Engine
| BUICK CASCADA | 2017, 2018, 2019 |
|---|---|
| BUICK ENCLAVE | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| BUICK ENCORE | 2017, 2018, 2019, 2020, 2021, 2022 |
| BUICK ENCORE | 2023 to 2025 |
| BUICK ENCORE GX | 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| BUICK ENVISION | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| BUICK ENVISTA | 2024, 2025, 2026 |
| BUICK LACROSSE | 2017, 2018, 2019 |
| BUICK LACROSSE | 2020 |
| BUICK REGAL | 2017, 2018, 2019, 2020 |
| BUICK REGAL TOURX | 2018 |
| BUICK REGAL TOURX | 2020 |
| BUICK VERANO | 2017 |
| CADILLAC ATS | 2017, 2018, 2019 |
| CADILLAC ATS-V | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CADILLAC CT4 | 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CADILLAC CT5 | 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CADILLAC CT6 | 2017, 2018, 2019, 2020 |
| CADILLAC CT6 | 2021 |
| CADILLAC CTS | 2017, 2018, 2019 |
| CADILLAC CTS-V | 2018 (the catalog's model; the bulletin names a series or trim of it) |
| CADILLAC ESCALADE | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CADILLAC ESCALADE ESV | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CADILLAC XT4 | 2018 |
| CADILLAC XT4 | 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CADILLAC XT4 | 2026 |
| CADILLAC XT5 | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CADILLAC XT6 | 2020, 2021, 2022, 2023, 2024, 2025 |
| CADILLAC XT6 | 2026 |
| CADILLAC XTS | 2017, 2018, 2019 |
| CADILLAC XTS | 2020 |
| CHEVROLET 4500HD | 2023 |
| CHEVROLET 5500HD | 2023 |
| CHEVROLET 6500 | 2019 |
| CHEVROLET 6500HD | 2023 |
| CHEVROLET BLAZER | 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CHEVROLET CAMARO | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| CHEVROLET CAPRICE | 2017 to 2018 |
| CHEVROLET CAPRICE POLICE PURSUIT | 2017 |
| CHEVROLET CAPTIVA | 2017 to 2018 |
| CHEVROLET CHEVEROLET SS | 2017 |
| CHEVROLET CITY EXPRESS | 2018 |
| CHEVROLET COLORADO | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CHEVROLET CORVETTE | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET CORVETTE CONVERTIBLE | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET CORVETTE COUPE | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET CORVETTE E-RAY | 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET CRUZE | 2017, 2018, 2019 |
| CHEVROLET EQUINOX | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CHEVROLET EXPRESS | 2017, 2018, 2019, 2020, 2021 |
| CHEVROLET EXPRESS | 2023, 2024, 2025, 2026 |
| CHEVROLET EXPRESS 2500 | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS 2500 | 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS 2500 | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS 3500 | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS 3500 | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS 4500 | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET EXPRESS CUTAWAY VAN | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET G4500 | 2018 |
| CHEVROLET IMPALA | 2017, 2018, 2019, 2020 |
| CHEVROLET MALIBU | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET MALIBU HYBRID | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 3500 | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 4500 | 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 5500 | 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 5500 | 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 6500 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 6500 | 2021, 2022, 2023 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 6500 | 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO LT | 2018 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SONIC | 2017, 2018, 2019, 2020 |
| CHEVROLET SPARK | 2017, 2018, 2019, 2020, 2021, 2022 |
| CHEVROLET SUBURBAN | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 |
| CHEVROLET SUBURBAN 1500 | 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET TAHOE | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CHEVROLET TRAILBLAZER | 2017 to 2020 |
| CHEVROLET TRAILBLAZER | 2021, 2022, 2023, 2024, 2025, 2026 |
| CHEVROLET TRAVERSE | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025 |
| CHEVROLET TRAX | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| CHEVROLET duplicate SILVERADO 5500 | 2019 |
| GMC 3500HD | 2024 |
| GMC ACADIA | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| GMC CANYON | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| GMC G3500 | 2017 to 2018 |
| GMC SAVANA | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| GMC SAVANA 1500 | 2017 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 2500 | 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 2500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 2500 | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 3500 | 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 3500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 3500 | 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA 4500 | 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SAVANA CUTAWAY VAN | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 1500 | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA DENALI | 2017, 2018, 2019, 2020 (the catalog's model; the bulletin names a series or trim of it) |
| GMC TERRAIN | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| GMC YUKON | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| GMC YUKON DENALI | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON DENALI XL | 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
| GMC YUKON XL | 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024, 2025, 2026 |
| GMC YUKON XL 1500 | 2023 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 2025225 | 2025-04-24. Engine |
|---|---|
| 25V274000 | 2025-04-24. ENGINE AND ENGINE COOLING:ENGINE:HARD PARTS INTERNAL/MECHANICAL |
| 21V346000 | 2021-05-13. ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM):SOFTWARE |
| 2019449 | 2019-09-06. Engine |
| 19V642000 | 2019-09-06. ENGINE; ELECTRICAL SYSTEM:SOFTWARE; FUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEM:INJECTORS |
| 19V328000 | 2019-04-25. ENGINE |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| N262570770-03 | 2026-10-16. Service campaign. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator. |
|---|---|
| N262576260 | 2026-10-15. Service campaign. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles may have a condition that could cause a small exhaust leak at the catalytic converter inlet. Dealers are to replace the catalytic converter inlet clamp and to inspect the catalytic converter – replacing it if damage is observed. The repairs will be made at no charge to the customer. |
| N262570770-02 | 2026-09-25. Service campaign. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator. |
| N262570770-01 | 2026-09-18. Service campaign. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator. |
| N262570770 | 2026-09-15. Service campaign. Certain vehicles may have a condition in which the thermal break tabs induce stress into the radiator causing a coolant leak. Dealers are to cut the thermal break tabs on the radiator. |
| N242484750-02 | 2026-09-01. Warranty extension. Special Coverage. Certain 2022 model year Buick Encore GX and Chevrolet Trailblazer vehicles, equipped with a 1.2L engine, may have a condition that could cause the turbocharger to fail. If this condition occurs, the Malfunction Indicator Lamp (Check Engine Light) will illuminate, and a diagnostic trouble code will set. Additionally, a message may be displayed indicating the vehicle’s available engine power is reduced. This special coverage covers the condition described above for a period of 15 years or 150,000 miles (240,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after January 14, 2025, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to January 14, 2025, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to replace the turbocharger as necessary. The repairs will be made at no charge to the customer. |
| N262572131 | 2026-08-28. Service campaign. Customer Satisfaction Program. Certain vehicles listed above may have a condition in which the oil galley in the cylinder head was not drilled properly. Dealers are to perform the inspection procedure contained within this bulletin. |
| N262568830 | 2026-08-04. Service campaign. Certain vehicles listed above may have a condition in which the oil filter was not adequately tightened. Dealers are to check and tighten the oil filter if found to be loose. |
| N262546590-01 | 2026-07-15. Service campaign. Certain vehicles listed above, may have a condition where coolant leaks from the radiator hose quick connect at the radiator inlet. This special coverage covers the condition described above for a period of 5 years or 60,000 miles (100,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after July 14, 2026, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to July 14, 2026, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to remove the inlet hose and replace the seal. The repairs will be made at no charge to the customer. |
| N262552620 | 2026-05-11. Service campaign. Certain vehicles may have a condition that could cause the cylinder 2 glow plug to fail. If this failure occurs, the Malfunction Indicator Light (Check Engine Light) will illuminate and a diagnostic trouble code will set. This special coverage covers the condition described above for a period of 15 years or 150,000 miles (240,000 km), whichever occurs first, from the date the vehicle was originally placed in service, regardless of ownership. For vehicles covered by Vehicle Service Contracts, all eligible claims with repair orders on or after May 11, 2026, are covered by this special coverage and must be submitted using the labor operation codes provided with this bulletin. Claims with repair orders prior to May 11, 2026, must be submitted to the Service Contract provider. Vehicle owners or lessees who paid for repairs referenced in this Special Coverage (“Customers”) are eligible for reimbursement of their reasonable and customary expenses in accordance with the procedures specified below. The conditional right to reimbursement is provided by GM solely in the interest of customer satisfaction and is personal to Customers. Customers may not assign and GM does not consent to any assignment of any Customer’s right to submit reimbursement claims, or to receive reimbursement, or any other rights granted by this Special Coverage to any third party, including but not limited to service contract providers, and this Special Coverage is not intended to and does not confer any third party beneficiary, subrogation or contribution rights, or any other rights to reimbursement, against GM, whether in law, equity or otherwise, on any third parties. Dealers are to replace the cylinder 2 glow plug as necessary. The repairs will be made at no charge to the customer. |