Buick Encore 2016–2022 — technical service bulletin
Bulletin 17NA221 · NHTSA communication 10212550 · issued Dec 20, 2021
Technical service bulletin
communication type
Equipment Adaptive/mobility
component
2016–2022
model years
8
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.