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Over-the-air update 661.31

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeOver-the-air update
NHTSA id11031813
Published by NHTSA2026-04-30
Manufacturer's number661.31
Manufacturer's date2026-04-28
Campaign id or software version661.31
NHTSA componentUNKNOWN OR OTHER
Manufacturer's systemACP: ACP2 (ADAS Compute Platform 2), ACP3_MCU (ADAS Compute Platform 3 - Microprocessor Control Unit), ACP3_SOC (ADAS Compute Platform 3 - System On A Chip)

NHTSA's summary

• Improvements to Super Cruise disengagement alerts. • Improvements to the availability of Super Cruise. • Improvements to driver attention monitoring to help reduce unnecessary OnStar escalation calls. • Improvements to Super Cruise lane merging performance. • Improvements to the responsiveness of rear view camera display. • Improvements to the performance of Brake Assist. • Fixes to help ensure proper Super Cruise lane change functionality. • Improvements to the availability of driver assistance features.

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.

Vehicles listed
CADILLAC LYRIQ2024

Listing a model year does not mean every vehicle of it is concerned: the document says which.