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Service bulletins for the 2020 Honda Grom

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.

10 on file from NHTSA, as of 2026-10-19.

By type

By component

Only bulletins with type: Service bulletin are shown. Show all

Bulletins, newest first
Grom125 #3 - August 20262026-08-24. Service bulletin. FUEL/PROPULSION SYSTEM. Service Bulletin - A fuel permeation test revealed that the fuel system does not meet regulatory standards. The fuel system has a lower than expected permeation value and is not within emission certification compliance.
Grom125 #3-February 20282026-03-03. Service bulletin. FUEL/PROPULSION SYSTEM. Service Bulletin - A fuel permeation test revealed that the fuel system does not meet regulatory standards. The fuel system has a lower than expected permeation value and is not within emission certification compliance.
GROM125 #3 - October 20252025-10-14. Service bulletin. FUEL/PROPULSION SYSTEM. Service Bulletin - A fuel permeation test revealed that the fuel system does not meet regulatory standards. The fuel system has a lower than expected permeation value and is not within emission certification compliance.
GROM 125 - August 20252025-08-18. Service bulletin. FUEL/PROPULSION SYSTEM. Service Bulletin - A fuel permeation test revealed that the fuel system does not meet regulatory standards. The fuel system has a lower than expected permeation value and is not within emission certification compliance.
AMV2005022020-05-19. Service bulletin. EQUIPMENT. Video Message - It concerns how to replace a leaky front rocker arm oil control valve. Due to a deteriorated lower gasket or an out-of-spec gasket groove, the front rocker arm oil control valve can leak in certain V6 models with variable cylinder management. To fix this issue service bulletin A20-023 was posted. Please let us know if you would like a copy of the video sent to you on a DVD or thumb drive.
AMV2005012020-05-19. Service bulletin. EQUIPMENT. Video Message - It concerns how to replace a leaky front rocker arm oil control valve. Due to a deteriorated lower gasket or an out-of-spec gasket groove, the front rocker arm oil control valve can leak in certain V6 models with variable cylinder management. To fix this issue service bulletin A20-023 was posted. Please let us know if you would like a copy of the video sent to you on a DVD or thumb drive.

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.