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Service bulletin 21NA177

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 id10214227
Published by NHTSA2022-06-21
Manufacturer's number21NA177
Manufacturer's date2022-02-03
NHTSA componentSTEERING:ELECTRIC POWER ASSIST SYSTEM; STEERING

NHTSA's summary

This service bulletin provides repair information to correct a customer concern of Service Power Steering DIC Message, DTC C0051 58 - Steering Wheel Angle Sensor Error Set.

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

Steering, Power steering

Trouble codes named

C0051

Vehicles listed
BUICK ENCORE GX2020, 2021, 2022
CHEVROLET TRAILBLAZER2021, 2022

Listing a model year does not mean every vehicle of it is concerned: the document says which.