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Service bulletin 23-NA-020

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 id10252783
Published by NHTSA2024-04-05
Manufacturer's number23-NA-020
Manufacturer's date2024-03-26
NHTSA componentENGINE AND ENGINE COOLING; ENGINE AND ENGINE COOLING:ENGINE:OIL/LUBRICATION

NHTSA's summary

This service bulletin provides a procedure to re-seal the front engine cover if found the cause of the customer concern of an engine oil leak.

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, Engine oil and lubrication

Vehicles listed
CHEVROLET CORVETTE2023

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