Service bulletin 20NA110
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 | 10214200 |
| Published by NHTSA | 2022-06-21 |
| Manufacturer's number | 20NA110 |
| Manufacturer's date | 2022-01-13 |
| NHTSA component | ENGINE AND ENGINE COOLING:ENGINE:DIESEL; FUEL SYSTEM, DIESEL:DELIVERY:FUEL PUMP; EQUIPMENT ADAPTIVE/MOBILITY |
NHTSA's summary
This service bulletin provides service information for a DEF pump that is unable to build pressure after replacement.
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, Equipment and accessories, Fuel system, Fuel pump
| CADILLAC ESCALADE | 2022 |
|---|---|
| CADILLAC ESCALADE ESV | 2021, 2022 |
| CADILLAC ESCALADE NA | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET 3500 | 2019 |
| CHEVROLET 3500 | 2020 |
| CHEVROLET 3500 | 2021 |
| CHEVROLET 3500 | 2022 |
| CHEVROLET 5500HD | 2020, 2021 |
| CHEVROLET 6500 | 2019 |
| CHEVROLET COLORADO | 2016, 2017, 2018, 2019, 2020, 2021, 2022 |
| CHEVROLET CRUZE | 2017, 2018, 2019 |
| CHEVROLET EQUINOX | 2018, 2019 |
| CHEVROLET EQUINOX | 2022 |
| CHEVROLET EXPRESS | 2017, 2018, 2019, 2020, 2021 |
| CHEVROLET SILVERADO 1500 | 2017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 2500 | 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 4500 | 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SILVERADO 6500 | 2021 (the catalog's model; the bulletin names a series or trim of it) |
| CHEVROLET SUBURBAN | 2021, 2022 |
| CHEVROLET TAHOE | 2021, 2022 |
| GMC CANYON | 2016, 2017, 2018, 2019, 2020, 2021, 2022 |
| GMC SAVANA | 2017, 2018, 2019, 2020, 2021, 2022 |
| GMC SIERRA 1500 | 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 2500 | 2017, 2018, 2019, 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA 3500 | 2020, 2021, 2022 (the catalog's model; the bulletin names a series or trim of it) |
| GMC SIERRA DENALI | 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it) |
| GMC TERRAIN | 2017, 2018, 2019, 2020 |
| GMC YUKON | 2021, 2022 |
| GMC YUKON XL | 2021, 2022 |
Listing a model year does not mean every vehicle of it is concerned: the document says which.
| 23V013000 | 2023-01-19. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP:CONTROL/DRIVE MODULE |
|---|---|
| 21V739000 | 2021-09-23. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP:CONTROL/DRIVE MODULE |
| 19V837000 | 2019-11-21. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP |
| 18V358000 | 2018-05-31. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP |
A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.
| 18NA235 | 2022-05-31. Service bulletin. This information bulletin advised the tech of possible use of low fuel quality and the possible ramifications in performance in regards to the customers concerns. |
|---|---|
| 20NA110 | 2020-11-30. Service bulletin. This informational bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump. |
| PIP4783B | 2020-04-13. Service bulletin. This Prelimary information informs the dealer of a diagnotic trouble code that may set due to a failed high pressure fuel pump. Dealers are to check fuel pressure as per current testing outlined in GM service information and replace the fuel pump if needed. |
| 20NA027 | 2020-04-06. Service bulletin. This technical bulletin provides a procedure to check the fuel pressure and update the ECM if the pressure is over 58 psi. |
| 19NA065 | 2019-05-20. Service bulletin. This technical bulletin provides a procedure to replace the Aux fuel pump if found the cause of the customers concern. |
| PIP5596 | 2018-11-13. Service bulletin. This Preliminary information communicates that when removing the fuel line jumper hose care should be taken to be sure the line is reinstalled correctly to avoid a no/low fuel pressure situation. |
| 17NA402 | 2018-06-04. Service bulletin. This technical bulletin provides a procedure to replace relays that may be sticking in cold regions. |
| 16NA004 | 2018-05-21. Service bulletin. This technical bulletin provides a possible location and repair to a wiring harness that may be contacting the fuel pump cover. |
| PIT5363D | 2018-05-21. Service bulletin. This Preliminary Information communication provides information to the technician about vehicles that may have a click or tick noise heard inside cab with engine running.Technician may find the engine or High Pressure Fuel Pump tick noise that is very loud in the cab of the truck.Comparison with another truck having the same powertrain could show the other truck is quieter.Technician will install an acoustic seal that may be missing or dislodged.Update extends to all engines and all model years. |
| 17NA335 | 2018-04-23. Service bulletin. This technical bulletin provides a procedure to replace the fuel pump to correct the MIL concerns. |