Service bulletin 19NA237
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 | 10183176 |
| Published by NHTSA | 2020-11-30 |
| Manufacturer's number | 19NA237 |
| Manufacturer's date | 2020-10-27 |
| NHTSA component | FUEL SYSTEM, DIESEL; EQUIPMENT |
NHTSA's summary
This informational bulletin explains how to identify possible DEF contamination.
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
Equipment and accessories, Fuel system
| CHEVROLET COLORADO | 2016, 2017, 2018, 2019, 2020, 2021 |
|---|---|
| CHEVROLET CRUZE | 2014, 2015, 2016, 2017, 2018, 2019 |
| CHEVROLET EQUINOX | 2018, 2019 |
| CHEVROLET EXPRESS | 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| CHEVROLET EXPRESS | 2020, 2021 |
| CHEVROLET SILVERADO 1500 | 2010, 2011, 2012, 2013, 2014 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2017, 2018 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 1500 | 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 3500 | 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 4500 | 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC CANYON | 2016, 2017, 2018, 2019, 2020, 2021 |
| GMC SAVANA | 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018 |
| GMC SAVANA | 2020, 2021 |
| GMC SIERRA 1500 | 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA DENALI | 2010, 2011, 2012, 2013 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA DENALI | 2015, 2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC TERRAIN | 2018, 2019, 2020 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 2023040 | 2023-02-02. Fuel System |
|---|---|
| 23V047000 | 2023-02-02. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY |
| 2022160 | 2022-03-31. Accessories |
| 21V497000 | 2021-07-01. EQUIPMENT:OTHER:LABELS |
| 21V496000 | 2021-07-01. EQUIPMENT:ELECTRICAL:ENGINE BLOCK HEATER |
| 2020165 | 2020-04-16. Accessories |
| 19V837000 | 2019-11-21. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP |
| 2019494 | 2019-10-03. Accessories |
| 2019462 | 2019-09-19. Fuel System |
| 19V667000 | 2019-09-19. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| N252516900-01 | 2026-02-19. Emissions. Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module. |
|---|---|
| N252516900 | 2026-02-05. Emissions. Emission Recall. Additional VINs moved to Open status. |
| N252516900 | 2026-01-29. Emissions. Emission Recall. Additional VINs Moved to ‘Open’ Status |
| N252516900 | 2026-01-15. Emissions. Emission Recall. Fuel Pump Power Control Module. Additional VINs Moved to ‘Open’ Status |
| N252516900 | 2025-12-17. Emissions. Emission Recall. Additional VINs moved to Open status. |
| 18-NA-180 | 2025-10-16. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information. |
| N252516900 | 2025-10-09. Emissions. Emission Recall. Population Expansion. |
| N252516900 | 2025-10-03. Emissions. Emission Recall. Fuel Pump Power Control Module. |
| 18-NA-180 | 2025-09-26. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information. |
| N252516900 | 2025-09-11. Emissions. Emission Recall. General Motors has decided to conduct a Voluntary Emission Recall. Certain vehicles listed above may have a condition which can cause the fuel pump power control module to fail. If this were to occur, fuel flow to the engine could be interrupted. Dealers will replace the fuel pump power control module. |