NHTSA ID Number: 11031768
Manufacturer Communication Number: 661.50
TSB/Document Date: 2026-04-30
Summary
• 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.
GM Over-The-Air (OTA) Software Update
Update Title
GM Update 661.50
Associated Field Action(s)
N25-253993
N25-252256
N25-253880
N25-253993
N25-252256
N25-253880
N25-253549
N25-252206
N25-252612
N25-252362
N25-252723
N25-253978
N25-253883
N25-253409
N25-253330
Release Notes
• 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.
Model Year
2026
Make
Model
Components
VCU (Virtual Cockpit Unit)
ACP3_MCU (ADAS Compute Platform 3 - Microprocessor Control
Unit)
ACP3_SOC (ADAS Compute Platform 3 - System On A Chip)
AMP (Amplifier)
AOS (Automatic Occupant Sensing Module)
RDCM (Rear Driver Control Module)
EBCM (Electronic Brake Control Module)
BCM (Body Control Module)
SRR (Short Range Radar)
LRR (Long Range Radar)
PFCM (Power Front Closure Module)
PTM (Power Tailgate Module)
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TSB/Document ID: 661.50
Replacement Service Bulletin Number:
MFR Communication Date: 2026-04-01
MFR Internal Campaign ID/Software Version: 661.50
Communication Type: Over The Air
NHTSA Components: UNKNOWN OR OTHER
MFR Component System: VCU, ACP3, AMP, AOS, RDCM, EBCM, BCM, SRR, LRR, PFCM, PTM
MFR Component Subsystem: VCU, ACP3, AMP, AOS, RDCM, EBCM, BCM, SRR, LRR, PFCM, PTM
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