Over-the-air update 661.41
A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.
| Type | Over-the-air update |
|---|---|
| NHTSA id | 11032923 |
| Published by NHTSA | 2026-05-26 |
| Manufacturer's number | 661.41 |
| Manufacturer's date | 2026-05-11 |
| Campaign id or software version | 661.41 |
| NHTSA component | UNKNOWN OR OTHER |
| Manufacturer's system | ARB, ECM, IPC: ARB (Articulated Running Boards), ECM (Engine Control Module), IPC (Instrument Panel Cluster) |
NHTSA's 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.
The document
The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.
| CHEVROLET SILVERADO 1500 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
|---|---|
| GMC SIERRA 1500 | 2024 (the catalog's model; the bulletin names a series or trim of it) |
Listing a model year does not mean every vehicle of it is concerned: the document says which.