Buick Lacrosse 2016–2019 — technical service bulletin
Bulletin 21NA158 · NHTSA communication 10200150 · issued Jun 30, 2021
Technical service bulletin
communication type
Electrical System
component
2016–2019
model years
10
vehicle entries
Official summary
This service bulletin provides information on High Voltage Battery Module Replacement.
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.