Buick Envision 2019–2023 — technical service bulletin
Bulletin 22-NA-203 · NHTSA communication 10225610 · issued Oct 17, 2022
Technical service bulletin
communication type
Electrical System
component
2019–2023
model years
7
vehicle entries
Official summary
This technical bulletin provides a procedure to correct the condition of Check Engine Lamp Illuminated on Driver Information Center (DIC) with DTC P0451 Set.
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.