Buick Encore GX 2019–2021 — technical service bulletin
Bulletin A202321990 · NHTSA communication 10200192 · issued Jun 24, 2021
Technical service bulletin
communication type
Equipment
component
2019–2021
model years
7
vehicle entries
Official summary
Service Update. Certain vehicles may have engine control module software that leads to erroneous additional fuel enrichment under rare driving conditions. Dealers are to reprogram the engine control module.
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.