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Service bulletin 24-NA-191

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 id11009429
Published by NHTSA2024-10-29
Manufacturer's number24-NA-191
Manufacturer's date2024-09-17
NHTSA componentSTRUCTURE:BODY

NHTSA's summary

This technical bulletin provides a procedure to correct the condition of Front End Noise While Driving or Driving Over Irregular Surfaces.

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

Body and frame

Vehicles listed
BRIGHTDROP ZEVO 4002024 (the catalog's model; the bulletin names a series or trim of it)
BRIGHTDROP ZEVO 6002024 (the catalog's model; the bulletin names a series or trim of it)
CHEVROLET SILVERADO EV2024 (the catalog's model; the bulletin names a series or trim of it)
GMC HUMMER EV PICKUP2024
GMC SIERRA EV2024 (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
20253502025-06-25. Structure
23V6830002023-10-12. STRUCTURE:BODY:ROOF AND PILLARS; AIR BAGS

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
21-NA-1902025-09-26. Service bulletin. This informational bulletin provides information for dealers/technicians on Front License Plate Installation
PIE08342025-09-10. Service bulletin. This engineering information (EI) is requesting information from technicians to perform the check list provided and contact the engineer listed in regards the hood will not latch, open and/or gets stuck, hood ajar message displayed on driver information center (DIC), DTCs P257D, P257E, P257F, B1C80, B1C81, B1C85, B1C89, B1C8C, B1C8D, B1CB5 , B1CBF set.
25-NA-1142025-09-06. Service bulletin. This informational bulletin provides information on Anti-Chip Coating Appearance.
24-NA-0292025-07-07. Service bulletin. This informational bulletin provides information on HUMMER EV Water Leak Diagnostic Tips.
24-NA-1292025-06-26. Service bulletin. This technical bulletin provides a procedure to correct Water Leak from Around Windshield Area.
24-NA-2162025-06-18. Service bulletin. This technical bulletin provides repair information to correct a customer concern of BrightDrop Power Passenger Door Inoperable.
23-NA-0972025-06-16. Service bulletin. This service bulletin provides a procedure to correct a customer concern of Upper Glove Box Door does not Open when the Button is Depressed or Takes Multiple Presses to Open.
24-NA-1512025-06-07. Service bulletin. This technical bulletin provides repair information to correct a customer concern of Loose Roof Ditch Molding.
PIE08262025-05-03. Service bulletin. This engineering information (EI) is requesting pictures from technicians in regard to center hood molding being loose and/or potentially detaching from vehicle.
24-NA-0282025-05-02. Service bulletin. This service bulletin provides information on Power Tonneau Cover Diagnostic Tips.