Buick Envision 2016–2019 — technical service bulletin
Bulletin 18NA020 · NHTSA communication 10169307 · issued Nov 5, 2019
Technical service bulletin
communication type
Electrical System
component
2016–2019
model years
8
vehicle entries
Official summary
This technical bulletin provides a procedure to replace the charge air cooler due to moisture getting inside of it and causing a malfunction indicator lamp illuminated with DTC P0300 and/or P0299/P2227.
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.