GM over-the-air update 661.50
What it saysSurround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras. NHTSA’s full summary ↓
GM filed this with NHTSA as an over-the-air update dated Jun 17, 2026, received Apr 7, 2026, about the exterior lighting — 7 documents under this number. It names 10 model years across Chevrolet, GMC and Cadillac (2024–2026). An 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.
One page for every brand it was filed under. Each brand’s bulletins: Chevrolet · GMC · Cadillac.
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What the bulletin says
Source: NHTSA's summary of the manufacturer's communication• Surround Vision Recorder, a new feature that allows you to record, watch, and save video from your vehicle's cameras. • Security Recording, a new feature that can automatically begin recording if your vehicle's alarm is triggered while it is parked. • Fixes to help ensure responsiveness for the driver display and rear view camera. • Fixes to help ensure proper Super Cruise lane change functionality. • Improvements to the performance of Bose AudioPilot to better counteract road and ambient noise. • Your towing experience is improving by preventing enabling King Crab mode when a trailer is attached. • When towing a trailer, you will now experience less trailer sway. • This update will help prevent One-Pedal Driving from deactivating after you remote start your vehicle. • Fixes to help ensure successful vehicle software updates. • Improvements to performance for under-hood storage opening. • Fixes to help ensure the swing gate opens and closes properly. • Fixes to help ensure proper functionality of Forward Collision Alert and availability of driver assistance features.
Documents filed under this number
| Document | Kind | Dated | NHTSA id | At NHTSA |
|---|---|---|---|---|
| 661.50 | Over-the-air update | Jun 17, 2026 | 11034061 | PDF, 187 KB |
| 661.50 | Over-the-air update | Jun 8, 2026 | 11034050 | PDF, 191 KB |
| 661.50 | Over-the-air update | Jun 3, 2026 | 11033770 | PDF, 191 KB |
| 661.50 | Over-the-air update | Jun 3, 2026 | 11033007 | PDF, 191 KB |
| 661.50 | Over-the-air update | May 1, 2026 | 11031927 | PDF, 197 KB |
| 661.50 | Over-the-air update | Apr 1, 2026 | 11031768 | PDF, 205 KB |
| 661.50 | Over-the-air update | Mar 30, 2026 | 11031126 | PDF, 189 KB |
The summary is NHTSA’s abstract of the document, as filed under 49 CFR 579.5. 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. A PDF link is shown only once NHTSA’s own server has been seen to serve that document; the rest are checked over the following nights. Quote the number at a service desk; it is what the dealer’s system is keyed on.
Model years it names
Source: as the manufacturer filed themChevrolet 3 model years
GMC 3 model years
Also filed against model years this site has no page for: 2026 GMC Hummer EV Pickup; 2026 GMC Hummer EV SUV.
Cadillac 4 model years
A vehicle page’s bulletin list shows the newest few communications filed against that model year; the count there is every one.
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What owners reported
Source: NHTSA complaint databaseOwners of the 8 model years this bulletin names have filed 449 complaints with NHTSA since 2015. 14 of them name Exterior Lighting — the same broad component group this bulletin is filed under. NHTSA groups complaints coarsely, so that means the same area of the vehicle, not necessarily the same fault.
Right rear taillight and brake light fail to light intermittently. This is a known defect on many other Lyriqs. When this failure occurs, the vehicle is not compliant with state laws regarding having working taillights and brake lights, and could result in a moving violation ticket.
2024 Cadillac Lyriq · Exterior Lighting · filed with NHTSA Aug 22, 2024 · ODI 11610219
The driver-side headlight on my 2025 Cadillac Escalade failed while the vehicle was still under factory warranty. This is a critical safety component that significantly reduces nighttime visibility and creates a safety risk for both myself and other drivers on the road.
2025 Cadillac Escalade · Exterior Lighting · filed with NHTSA May 27, 2026 · ODI 11740405
A complaint is one owner’s account, not a defect finding, and a bulletin is not a recall. Nothing here says this bulletin was issued because of these complaints, or that the repair it describes fixed them. Complaint files on this site begin in 2015.
More bulletins about the exterior lighting
Source: same model, same component group10 other manufacturer communications filed against these GM models under the same component group (exterior lighting), newest first. The eight newest are listed; the rest are on the Chevrolet list.
| Number | Kind | Dated | NHTSA’s summary |
|---|---|---|---|
| 23-NA-086 | Service bulletin | Feb 12, 2025 | This informational bulletin provides information on dark spots in the headlamp pattern when the vehicle is pulled up to a wall or garage. |
| 01-08-42-001Q | Service bulletin | Jan 27, 2025 | This service bulletin provides information on Exterior Lamp Condensation and Water Leak Information and Replacement Guidelines. |
| PIT6310 | Service bulletin | Dec 19, 2024 | This Preliminary information communicates an issue where the rear tail lights may not work and dealership are to replace the tail light asse… |
| PIT6280 | Service bulletin | Nov 8, 2024 | This Preliminary information communicates that a dealer may install the perimeter rocker lighting kit and find that it will not illuminate.… |
| PIT5918B | Service bulletin | Aug 16, 2024 | This Preliminary information communicates an issue where GM Accessory Illuminated Emblem may cause an issue with the left headlight/turn sig… |
| N232422480 | Service bulletin | Mar 18, 2024 | Service Update: Certain vehicles may have a condition in which the headlampsâ aim may drift high or low during a drive compared to the ini… |
| PIT5989A | Service bulletin | Feb 29, 2024 | This Preliminary information communicates a issue where the Can bus 1 data line is being corrupted by a aftermarket lighting module or poor… |
| 02-08-42-001J | Service bulletin | Jan 12, 2024 | This informational bulletin provides information for dealers/technicians on Headlamp, Tail Lamp, License Lamp or Fog/Driving Lamp Damage. |
Quote the number at the service desk. It is what the dealer’s system is keyed on.
Every manufacturer communication NHTSA holds for Chevrolet, GMC and Cadillac, by the number printed on the letter.
Common questions
Source: NHTSA, 49 CFR 579.5Is GM 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 10 model years across 3 brands (Chevrolet, GMC and Cadillac): 2025 Cadillac Celestiq, 2026 Cadillac Escalade, 2025 Cadillac Escalade, 2024 Cadillac Lyriq, 2024 Chevrolet Blazer, 2026 Chevrolet Suburban and more. Whether one particular vehicle is affected is a matter of its VIN and its build, not its model year alone.