Axxess ANC-GMH4 – Active Noise Cancellation (ANC) Bypass Harness
The Axxess ANC-GMH4 is an Active Noise Cancellation (ANC) bypass harness designed for select GM vehicles equipped with factory ANC systems. It allows installers to bypass the factory ANC module when adding aftermarket speakers, subwoofers, amplifiers, or other audio upgrades to prevent unwanted noise cancellation interference.
The ANC system uses factory microphones and inverted speaker signals to reduce cabin noise. During audio upgrades, the factory ANC system can sometimes mistake aftermarket speaker or subwoofer output as unwanted noise. The ANC-GMH4 disables that interference while maintaining proper audio system operation.
Key Features
- Active Noise Cancellation (ANC) bypass harness
- Designed for select GM vehicles with factory ANC systems
- Bypasses factory ANC microphones and processing
- Helps eliminate unwanted ANC interference during audio upgrades
- Plug-and-play installation with vehicle-specific connectors
- Helps improve compatibility with aftermarket amplifiers, speakers, and subwoofers
- No cutting of factory wiring required
Vehicle Applications
- Select 2020 Chevrolet Equinox models
- Select 2020 GMC Terrain models
- Non-amplified GM ANC audio systems (verify vehicle RPO/application before installation)
Ideal Use For
- Adding aftermarket subwoofers to ANC-equipped GM vehicles
- Installing aftermarket speakers or amplifiers
- Preventing ANC-related audio issues after upgrades
- Professional mobile electronics installations