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Service bulletin 18-NA-056

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 id11010415
Published by NHTSA2024-11-09
Manufacturer's number18-NA-056
Manufacturer's date2024-10-02
NHTSA componentELECTRICAL SYSTEM; LANE DEPARTURE: BLIND SPOT DETECTION

NHTSA's summary

This service bulletin provides a procedure to apply aluminum butyl tape around the lower side object modules and the fascia to aid in deflecting the radar away from the ground and stop triggering false alerts.

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, Electrical system, Blind spot detection

Vehicles listed
BUICK ENCORE2017, 2018, 2019, 2020, 2021, 2022
BUICK ENCORE2023

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.