Chevrolet Blazer 2020–2021 — technical service bulletin
Bulletin PIT5839B · NHTSA communication 10201317 · issued Aug 18, 2021
Technical service bulletin
communication type
Electrical System
component
2020–2021
model years
14
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
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.