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Service bulletin 20NA162

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 id10180318
Published by NHTSA2020-09-28
Manufacturer's number20NA162
Manufacturer's date2020-08-17
NHTSA componentFUEL SYSTEM, GASOLINE

NHTSA's summary

THis informational bulletin advises the tech of a possible plugged fuel breather vent and how to add a vent breather line to correct the customers concern.

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
CHEVROLET SILVERADO 15002017, 2018 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO 25002015, 2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA 25002015, 2016, 2017, 2018, 2019 (the catalog's model; the bulletin names a series or trim of it)
GMC SIERRA DENALI2015, 2016, 2017, 2018 (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.

Recalls for the same vehicles and component
20230402023-02-02. Fuel System
23V0470002023-02-02. FUEL SYSTEM, DIESEL:STORAGE:TANK ASSEMBLY
20190552019-02-08. Fuel System
19V0880002019-02-07. FUEL SYSTEM, GASOLINE:STORAGE:TANK ASSEMBLY
20175112017-10-20. Fuel System
17V6640002017-10-19. FUEL SYSTEM, GASOLINE:STORAGE:AUXILLARY TANK
14V8200002014-12-24. FUEL SYSTEM, DIESEL
20145882014-12-22. Fuel System
20141532014-04-25. Fuel System
14V2130002014-04-25. FUEL SYSTEM, DIESEL

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
18-NA-1802025-10-16. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
18-NA-1802025-09-26. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
25-NA-0652025-04-24. Service bulletin. This informational bulletin instructs the tech when fuel/fluid is needed to be tested and where it can be sent for analysis.
18-NA-1802025-01-30. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
18-NA-1802025-01-08. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
18-NA-1802024-12-17. Service bulletin. This Warranty Administration service bulletin provides Lithium-Ion battery Exchange Process and Transaction Submission information.
PIT62592024-12-05. Service bulletin. This Preliminary information communicates information on faulty replacement K111 Fuel Pump Driver Control Module.
24-NA-2252024-12-02. Service bulletin. This bulletin provides information on how to look for and test for DEF or water in the fuel system and what the specs should be.
17-NA-3022024-10-29. Service bulletin. This informational bulletin provides information on availability for a locking gas cap for trucks are operated in high amount of dirt or dust which can migrate to the filler cap area.
24-NA-1972024-10-29. Service bulletin. This technical bulletin provides a procedure to correct the condition of Malfunction Indicator Lamp Illuminated with DTCs P2463 P2459 P11FB P11D3.