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Service bulletin 18NA056

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 id10163223
Published by NHTSA2019-07-29
Manufacturer's number18NA056
Manufacturer's date2019-06-13
NHTSA componentLANE DEPARTURE: SENSING SYSTEM: LIDAR

NHTSA's summary

These technical bulletin provides a procedure to apply aluminum butyl tap around the lower side object models and the fascia to add 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

Vehicles listed
BUICK ENCORE2017, 2018, 2019

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-0562024-11-09. Service bulletin. 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.
21NA2462022-06-21. Service bulletin. This service bulletin provides repair information to correct customer concerns of Unwanted Front Windshield Wiper Swipe, Cruise Control Wont Turn On, Steering Wheel Controls Inoperative, DTCs P155A SYM00, B1529 SYM03.
070601016G2022-06-13. Service bulletin. This informational bulletin provides information on Internal Engine Noise or Damage After Oil Filter Replacement.
22NA0122022-05-31. Service bulletin. This service bulletin provides information for dealers/technicians on Stone Chip/Membrane Damage, Broken Connector and/or Sensor Retaining Tabs, and/or Paint Damage of Park Assist Sensors.
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.
PIC6086G2021-01-25. Service bulletin. This Preliminary Information communication provides the technician with steps to resolve the issue of an oily substance that may be found on the inside windshield surface, and appears to be leaking from the rear view mirror area. Technician will remove the moisture sensor and clean the glass and mounting bracket with alcohol wipe. If the gel separates from the sensor the sensor will need to be replaced.
N1922824802020-02-18. Service bulletin. Customer Satisfaction Program. Certain vehicles, may have several wires going to the body control module (BCM) damaged due to the installation/removal of the aftermarket LoJack alarm system from the vehicle. Dealer will inspect the wires going to the BCM and knee bolster for evidence that a LoJack alarm system was removed and repair as necessary.
060089026N2018-06-04. Service bulletin. This warranty bulletin provides labor operation numbers for customer concerns that cant be duplicated.
080730026D2018-05-07. Service bulletin. This informational bulletin provides information on Some vehicles may rock or move slightly forward or rearward while in Park at start up after cold soak. This condition may be accompanied by a clunk noise. This is a slight movement that is more often seen visually, rather than felt, when viewed from the outside and using the auto-start feature, if equipped.
17NA3312018-04-23. Service bulletin. This informational bulletin provides information to the customer about the rear camera guidelines not being present at times due to the VBM taking over the rear camera option.