About the Axxess ANC-GMH4 ANC Bypass Harness
Product highlights:
- ANC bypass harness for select 2020 Chevy Equinox and GMC Terrain vehicles with Bose® audio
- plugs into factory ANC module or amplifier
- installation instructions included
- warranty: 1 year
- MFR # ANC-GMH4
- Item # 120ANCGMH4
- California customers: Please click here for your Proposition 65 WARNING.
What's in the box:
More details on the Axxess ANC-GMH4 ANC Bypass Harness

Product Research
Features
ANC Bypass Harness: TAutomatic noise control (ANC) systems minimize road and engine noise, but they can also create strange and unwanted sounds when an aftermarket audio system gets installed in the vehicle. Bypassing an ANC system usually involves disconnecting or cutting the system's wiring, but this ANC bypass harness plugs into the vehicle's separate ANC module or amplifier, defeating the system so the aftermarket system can perform without interference.
Vehicle Compatibility: This Axxess Integrate ANC (Active Noise Canceling) bypass harness ensures smooth speaker and subwoofer upgrades in select 2020 GM vehicles featuring a non-amplified factory audio system with factory installed ANC audio system.
Make | Model | RPO Code | Year |
---|---|---|---|
Chevrolet | Equinox | NKC+UZ6, IOU, or IOS w/o IOR | 2020 |
GMC | Terrain | NKC+UZ6, IOU, or IOS w/o IOR | 2020 |
Notes:
- Make sure to check your vehicle's RPO code which can be found in the glove box, on the trunk floor or inside the driver's door.
- In some vehicles the ANC module is a stand-alone component, while in other vehicles it is located inside the factory amplifier.
- Refer to the included Install Manual for your vehicle's ANC module location.
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