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Service bulletin 17NA221

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 id10212597
Published by NHTSA2022-05-31
Manufacturer's number17NA221
Manufacturer's date2022-01-14
NHTSA componentEXTERIOR LIGHTING

NHTSA's summary

This service bulletin provides repair procedures to correct customer concerns of Poor Engine Performance in Extremely Cold Weather Conditions for LE2 Engines, Charge Air Cooler (CAC) Icing - Malfunction Indicator Lamp (MIL) Illuminated.

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

Lighting

Vehicles listed
BUICK ENCORE2016, 2017, 2018, 2019
BUICK ENCORE2021, 2022
CHEVROLET TRAX2021, 2022

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
23-NA-0862025-02-20. Service bulletin. This service bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
01-08-42-001Q2025-02-11. Service bulletin. This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines.
23-NA-0862024-12-04. Service bulletin. This service bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
23-NA-0862024-09-21. Service bulletin. This service bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
22-NA-2442024-05-30. Warranty extension. This service bulletin provides information about GM Accessories - Dealer-Installed, Repaired or Replaced During Warranty Coverage Period.
23-NA-0862024-05-15. Service bulletin. This service bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
02-08-42-001J2024-01-19. Service bulletin. This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage.
21-NA-1352023-11-29. Service bulletin. This service bulletin provides information to inform dealership personnel about Law Enforcement and Government vehicles that request to disable or enable content.
23-NA-0862023-11-20. Service bulletin. This informational bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage.
22-NA-0532023-07-14. Service bulletin. This service bulletin provides information for dealers/technicians on New Labor Operations for Limited Production Option (LPO) Calibrated Accessories.