Chevrolet Silverado 1500 2024 — technical service bulletin
Bulletin 661.41 · NHTSA communication 11032923 · issued May 11, 2026
Technical service bulletin
communication type
Unknown OR Other
component
2024
model years
2
vehicle entries
Official summary
• Improvements to driver display information for Diesel Exhaust Fluid (DEF) range including drivable range in miles, low DEF warnings, and maximum speed warnings. • Improvements to start reliability and reduced check engine light activation. • Improvements to turbo system diagnostics. • Improvements to reliability when extending the running boards on your vehicle.
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.