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Service bulletin PIC6388A

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 id10173691
Published by NHTSA2020-04-13
Manufacturer's numberPIC6388A
Manufacturer's date2020-03-12
NHTSA componentLANE DEPARTURE: BLIND SPOT DETECTION; VISIBILITY

NHTSA's summary

This PI communicates a parts restriction is in effect on 2020 Cadillac CT4, and CT5 Side Blind Zone Module.

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

Driver assistance, Glass, wipers and mirrors, Blind spot detection

Vehicles listed
CADILLAC CT42020
CADILLAC CT52020
CHEVROLET CORVETTE2020

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

Other bulletins for the same vehicles and component
PIT5698B2021-09-13. Service bulletin. This Preliminary information communicates additional information on how a LIN bus operates and diagnostic tips when working on a LIN bus.
PIC6388B2020-08-10. Service bulletin. This PI communicates a parts restriction is in effect on 2020 Cadillac CT4, and CT5 Side Blind Zone Module.
PIC63882020-02-10. Service bulletin. This PI communicates a parts restriction is in effect on 2020 cadillac CT5 Side Blind Zone Module.