Buick Encore 2021–2022 — technical service bulletin
Bulletin 22-NA-217 · NHTSA communication 10231485 · issued Jan 20, 2023
Technical service bulletin
communication type
Engine and Engine Cooling
component
2021–2022
model years
4
vehicle entries
Official summary
This technical bulletin provides a procedure to smoke test the EVAP system to help verify a possible evap canister leak.
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.