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Service bulletin No. 73-20

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 id10176845
Published by NHTSA2020-07-01
Manufacturer's numberNo. 73-20
Manufacturer's date2020-06-10
NHTSA componentVISIBILITY:POWER WINDOW DEVICES AND CONTROLS; EQUIPMENT

NHTSA's summary

Instructions on how to replace the power window covers in the event that there is a buzzing noise from the door panel area.

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

Equipment and accessories, Glass, wipers and mirrors, Power windows

Vehicles listed
PORSCHE 9112020

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