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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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10205057
Published by NHTSA2021-12-20
Manufacturer's number20NA110
Manufacturer's date2021-08-20
NHTSA componentFUEL SYSTEM, GASOLINE

NHTSA's summary

This service bulletin advises the technician on what to do if the DEF pump has been replaced and perform a leak test to prime the pump.

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

Fuel system

Vehicles listed
CADILLAC ESCALADE ESV2021
CADILLAC ESCALADE NA2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET 4500HD2021
CHEVROLET 5500HD2021
CHEVROLET COLORADO2016, 2017, 2018, 2019, 2020, 2021
CHEVROLET CRUZE2017, 2018, 2019
CHEVROLET EQUINOX2018, 2019
CHEVROLET EXPRESS2017, 2018, 2019, 2020, 2021
CHEVROLET SILVERADO 15002017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 45002019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET TAHOE2021
GMC CANYON2016, 2017, 2018, 2019, 2020, 2021
GMC SAVANA2017, 2018, 2019, 2020, 2021
GMC SIERRA 15002020, 2021 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002017, 2018, 2019, 2020, 2021 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
GMC TERRAIN2017, 2018, 2019, 2020
GMC YUKON2021
GMC YUKON XL2021

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Recalls for the same vehicles and component
25V6190002025-09-18. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
20230402023-02-02. Fuel System
23V0470002023-02-02. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
20215832021-09-23. Fuel System
21V7390002021-09-23. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP:CONTROL/DRIVE MODULE
21V0640002021-02-11. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
19V8370002019-11-21. FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
20194622019-09-19. Fuel System
19V6670002019-09-19. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
20190552019-02-08. Fuel System

A recall listed here may apply to some of the same vehicles. Only the manufacturer can say whether it applies to one vehicle.

Other bulletins for the same vehicles and component
N252516900-012026-02-19. 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.
N2525169002026-02-05. Emissions. Emission Recall. Additional VINs moved to Open status.
N2525169002026-01-29. Emissions. Emission Recall. Additional VINs Moved to ‘Open’ Status
N2525169002026-01-15. Emissions. Emission Recall. Fuel Pump Power Control Module. Additional VINs Moved to ‘Open’ Status
N2525169002025-12-17. Emissions. Emission Recall. Additional VINs moved to Open status.
18-NA-1802025-10-16. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
N2525169002025-10-09. Emissions. Emission Recall. Population Expansion.
N2525169002025-10-03. Emissions. Emission Recall. Fuel Pump Power Control Module.
18-NA-1802025-09-26. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
N2525169002025-09-11. 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.