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Service bulletin 21NA017

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 id10199255
Published by NHTSA2021-07-19
Manufacturer's number21NA017
Manufacturer's date2021-05-19
NHTSA componentSTRUCTURE

NHTSA's summary

This technical bulletin provides repair information to correct a customer concern of a rattle or creak noise heard coming from driver left rear quarter panel area when driving over bumps.

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
CHEVROLET TRAILBLAZER2021

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

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23-NA-2182023-12-21. Service bulletin. This service bulletin provides repair information to correct a customer concern of a Rear Side Door Weatherstrip Coming Loose.