Chevrolet Blazer 2020–2021 — technical service bulletin
Bulletin PIT5839 · NHTSA communication 10193475 · issued Apr 27, 2021
Technical service bulletin
communication type
Equipment
component
2020–2021
model years
18
vehicle entries
Official summary
This Preliminary information communicates to GM dealers that the above mentioned concern is software related and that General Motors is working on a solution.
Vehicles covered
- 2020 Chevrolet Blazer
- 2020 Chevrolet Camaro
- 2020 Chevrolet Colorado
- 2021 Chevrolet Colorado
- 2020 Chevrolet Equinox
- 2021 Chevrolet Equinox
- 2020 Chevrolet Malibu
- 2021 Chevrolet Silverado 1500
- 2020 Chevrolet Silverado 2500
- 2020 Chevrolet Sonic
- 2020 Chevrolet Trax
- 2021 Chevrolet Trax
- 2020 GMC Canyon
- 2021 GMC Canyon
- 2021 GMC Sierra 1500
- 2020 GMC Sierra 2500
- 2020 GMC Terrain
- 2021 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.