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Service bulletin PIC6420

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 id10184094
Published by NHTSA2020-12-14
Manufacturer's numberPIC6420
Manufacturer's date2020-11-05
NHTSA componentELECTRICAL SYSTEM:WIRING; ELECTRICAL SYSTEM

NHTSA's summary

This Preliminary information communicates information on coax cable connection concerns that can cause a black screen in reverse.

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

Electrical system, Wiring and fuses

Vehicles listed
CADILLAC XT52020, 2021
CADILLAC XT62020, 2021
GMC ACADIA2020, 2021

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
PIT57382020-04-13. Service bulletin. This Preliminary information communicates DRL circuit #309, gray wire at X104 may have a poor connection due to a backed-out terminal or the wire being pulled too tight.