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Service bulletin 21NA246

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 id10214214
Published by NHTSA2022-06-21
Manufacturer's number21NA246
Manufacturer's date2022-01-19
NHTSA componentVISIBILITY; FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL; STEERING; EQUIPMENT; VEHICLE SPEED CONTROL:CRUISE CONTROL

NHTSA's summary

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.

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, Equipment and accessories, Glass, wipers and mirrors, Steering, Throttle and cruise control, Adaptive cruise control

Trouble codes named

B1529, P155A

Vehicles listed
BUICK ENCORE2019, 2020
CHEVROLET TRAX2019, 2020

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
PIE05652020-06-01. Service bulletin. This engineering informational bulletin is requesting information from technicians to perform the check list provided and contact the engineer listed in regards to the Lane Keep Assist/Adaptive Cruise Control being inoperative.