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Service bulletin SS1034711

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 id10175417
Published by NHTSA2020-05-23
Manufacturer's numberSS1034711
Manufacturer's date2020-05-22
NHTSA componentVISIBILITY:REARVIEW MIRRORS/DEVICES

NHTSA's summary

Service Solution for Hadley Upper Mirror Glass Vibration. The following suggestions are not guaranteed to eliminate or fix the Hadley mirror vibration concern. We have had mixed results in field-testing. In some cases, these solutions eliminate or reduce the vibration and in others, it does not seem to make a difference. DTNA continues to work on a permanent solution to this 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

Glass, wipers and mirrors, Mirrors

Vehicles listed
WESTERN STAR 47002019, 2020, 2021
WESTERN STAR 48002019, 2020, 2021
WESTERN STAR 49002019, 2020, 2021
WESTERN STAR 57002019, 2020, 2021
WESTERN STAR 69002019, 2020, 2021

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