Buick Encore GX 2020–2026 — technical service bulletin
Bulletin PIC6632 · NHTSA communication 11026862 · issued Dec 23, 2025
Technical service bulletin
communication type
Unknown OR Other
component
2020–2026
model years
19
vehicle entries
Official summary
This bulletin communicates to the dealer actions to take when a customer has no or reduced air flow from HVAC vents.
Vehicles covered
- 2020 Buick Encore GX
- 2021 Buick Encore GX
- 2022 Buick Encore GX
- 2023 Buick Encore GX
- 2024 Buick Encore GX
- 2025 Buick Encore GX
- 2026 Buick Encore GX
- 2024 Buick Envista
- 2025 Buick Envista
- 2026 Buick Envista
- 2021 Chevrolet Trailblazer
- 2022 Chevrolet Trailblazer
- 2023 Chevrolet Trailblazer
- 2024 Chevrolet Trailblazer
- 2025 Chevrolet Trailblazer
- 2026 Chevrolet Trailblazer
- 2024 Chevrolet Trax
- 2025 Chevrolet Trax
- 2026 Chevrolet Trax
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.