Chevrolet Silverado 1500 2026 — technical service bulletin
Bulletin N26-254904 · NHTSA communication 11036479 · issued Aug 18, 2026
Technical service bulletin
communication type
Unknown / Other
component
2026
model years
2
vehicle entries
Official summary
• Fixes to help prevent false Service Driver Assist System messages. • Improvements to connectivity for OnStar.
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.