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Service bulletin PIT5843A

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 id10226386
Published by NHTSA2022-11-21
Manufacturer's numberPIT5843A
Manufacturer's date2022-10-19
NHTSA componentLATCHES/LOCKS/LINKAGES:DOORS:LOCK

NHTSA's summary

This Preliminary information communicates that a vehicle may come to the dealer with concerns of various warning messages, possibly the door locks cycling, passive entry inoperative or other concerns. The technician is instructed to inspect G401 for loose or missing terminals and to inspect G405.

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

Latches and locks

Vehicles listed
CHEVROLET BLAZER2020, 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
18-NA-2792023-02-23. Service bulletin. This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
18-NA-2792023-02-07. Service bulletin. This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
18NA2792021-07-19. Service bulletin. This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
18NA2792021-07-06. Service bulletin. This service bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.
18NA2792020-03-02. Service bulletin. This informational bulletin provides information for dealers/technicians on the process to disable and enable passive unlocking.