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Neucleus NC-GM40B by American International

Onstar, Bose, and Chime Interface for 2006-up GM LAN Vehicles (Nucleus NCGM40B)

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Neucleus NC-GM40B by American International

Onstar, Bose, and Chime Interface for 2006-up GM LAN Vehicles (Nucleus NCGM40B)


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The Neucleus NC-GM40B Data Bus Interface Solutions allow for the retention of vital functions within the General Motors Class II and LAN systems after replacing the factory radio. The retention of the popular OnStar and Bose features; the function of the door chime or access to 12-volt accessory power within these systems proves Neucleus a valuable asset to both the consumer and today's professional installer.

This particular chime module will use the factory speaker for chimes as opposed to a small built in speaker found on many other replacement modules. The chime volume will also be adjustable depending on the vehicle you install this into. It provides a phone mute wire to help integrate with factory bluetooth systems, and also has an automatic low voltage shutdown to prevent irritating speaker popping. The Nucleus NC-GM40B is a perfect solution for any compatible vehicles radio replacement.

  • Uses factory speaker for chime
  • Adjustable chime volume (select vehicles)
  • Generates a +12v switched output for aftermarket radios
  • Automatic low voltage shutdown
  • Illumination output wire
  • Works on vehicles with OnStar, amplified and standard BOSE systems
  • Phone mute
  • 1-year Manufacturer's warranty

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Neucleus NC-GM40B by American International