Cadillac bulletin 661.50
Cadillac filed this with NHTSA as a over-the-air update dated Jun 17, 2026, received Apr 7, 2026, about the unknown or other — 5 documents under this number. It names 4 model years (2024–2026). A over-the-air update is not a safety recall — there is no NHTSA campaign number and no federal requirement — but it is usually work the manufacturer pays for on the vehicles it names; the dealer checks the VIN against the manufacturer’s list.
What the bulletin says
Source: NHTSA's summary of the manufacturer's communication• Improves traction and stability control when accelerating or on uneven terrain. • Improves braking and stopping performance on low-traction surfaces. • Improves the performance of assisted braking features. • Improvements to the performance of Automatic Emergency Braking and Adaptive Cruise Control braking. • Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features. • Fixes to help ensure proper opening and closing speed for power doors. • Improvements to longevity for the drive unit used for power doors. • Improvements to the performance of driver assistance features. • Fixes to help ensure accurate driver display messages and alerts.
Documents filed under this number
| Document | Kind | Dated | NHTSA id |
|---|---|---|---|
| 661.50 | Over-the-air update | Jun 17, 2026 | 11034061 |
| 661.50 | Over-the-air update | Jun 3, 2026 | 11033770 |
| 661.50 | Over-the-air update | Jun 3, 2026 | 11033007 |
| 661.50 | Over-the-air update | May 1, 2026 | 11031927 |
| 661.50 | Over-the-air update | Mar 30, 2026 | 11031126 |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5; the full text comes from the manufacturer or a dealer. One communication is usually filed as several documents — the bulletin, a dealer notice, an owner letter — and the number on any of them finds this page. Quote it at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themA vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
Common questions
Source: NHTSA, 49 CFR 579.5Is Cadillac 661.50 a recall?
No. A over-the-air update is a manufacturer communication filed with NHTSA under 49 CFR 579.5; a safety recall carries an NHTSA campaign number (two digits, a letter, six digits) and a federal duty to repair for free. Check the vehicle’s recalls by VIN at nhtsa.gov/recalls, or on its page here.
Is the 661.50 repair free?
A over-the-air update is usually paid by the manufacturer on the vehicles it names, within the terms and time limit the document sets; the dealer checks the VIN against the manufacturer’s list.
Which vehicles does 661.50 cover?
The manufacturer filed it against 4 model years: 2025 Cadillac Celestiq, 2026 Cadillac Escalade, 2025 Cadillac Escalade, 2024 Cadillac Lyriq. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.