Buick Encore 2016–2022 — technical service bulletin
Bulletin 17NA221 · NHTSA communication 10205044 · issued Aug 5, 2021
Technical service bulletin
communication type
Exterior Lighting
component
2016–2022
model years
9
vehicle entries
Official 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.
Vehicles covered
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.