Buick Envision 2016–2020 — technical service bulletin

Bulletin 18NA020 · NHTSA communication 10175745 · issued Apr 7, 2020

Technical service bulletin

communication type

Electrical System

component

2016–2020

model years

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

2016 Buick Envision
2017 Buick Envision
2018 Buick Envision
2019 Buick Envision
2020 Buick Envision
2018 Chevrolet Equinox
2019 Chevrolet Equinox
2020 Chevrolet Equinox
2018 GMC Terrain
2019 GMC Terrain
2020 GMC Terrain

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.