Chevrolet Silverado 1500 2025 — technical service bulletin
Bulletin 25-NA-121 · NHTSA communication 11024501 · issued May 13, 2025
Technical service bulletin
communication type
Electrical System
component
2025
model years
6
vehicle entries
Official summary
This service bulletin provides information on the radio software related issues to update the radio to the latest software version Y177.
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.