Buick Encore GX 2019–2024 — technical service bulletin
Bulletin 20-NA-120 · NHTSA communication 10245401 · issued Nov 7, 2023
Technical service bulletin
communication type
Power Train
component
2019–2024
model years
15
vehicle entries
Official summary
This informational bulletin explains how to check if the pulley and/or drive chain has any damage caused by low fluid or a code set that causes the transmission to default maxing out pressure.
Vehicles covered
- 2020 Buick Encore GX
- 2021 Buick Encore GX
- 2022 Buick Encore GX
- 2023 Buick Encore GX
- 2024 Buick Encore GX
- 2019 Chevrolet Malibu
- 2020 Chevrolet Malibu
- 2021 Chevrolet Malibu
- 2022 Chevrolet Malibu
- 2023 Chevrolet Malibu
- 2024 Chevrolet Malibu
- 2021 Chevrolet Trailblazer
- 2022 Chevrolet Trailblazer
- 2023 Chevrolet Trailblazer
- 2024 Chevrolet Trailblazer
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.