Axxess ANC-GMH1 Active Noise Canceling Bypass Harness – Select 2014–2024 GM Vehicles

Axxess ANC-GMH1 is an active noise canceling (ANC) bypass harness designed to support speaker and subwoofer upgrades in select GM vehicles equipped with amplified ANC audio systems. It maintains proper communication between the vehicle’s audio equipment and the ANC system to prevent distortion, interference, and system conflicts during aftermarket audio upgrades.

GM ANC systems use built-in microphones to detect and cancel cabin noise, but aftermarket speaker and subwoofer vibration can be misread as noise, creating compatibility issues. The ANC-GMH1 bypass harness prevents these issues and helps protect sensitive vehicle electronics during system upgrades.

Key Performance Features

• Active noise canceling bypass harness
• Designed for select 2014–2023 GM vehicles with amplified ANC audio systems (covers a variety of RPOs)
• Enhances sound quality during audio system upgrades
• Eliminates unwanted ANC interference for full sound customization
• Helps protect vehicle electronics during aftermarket audio upgrades
• Quality connectors
• Note: Always check vehicle warranty terms before altering the audio system

System Role

• Used when upgrading speakers and/or adding a subwoofer in GM vehicles with amplified ANC systems
• Prevents ANC microphones from conflicting with aftermarket audio output
• Supports cleaner integration during upgrade workflows

Vehicle Applications

• Buick
  • Enclave 2020–2024 with or without UQA
  • Enclave 2018–2019 UQF or UQA
  • Encore 2017–2020 UQA
  • Envision 2016–2020 UQA or UZ6
  • La Crosse 2017–2019 UQF or UQS
  • Regal 2018–2020 UQA or UQ3
• Cadillac
  • CT6 2016–2020 UQA, UQS
  • ATS 2014–2019 UQA, UQS
  • CTS 2016–2019 UQS
  • CTS Sedan 2015 UQS
  • Escalade 2015–2020 UQA, UQS, UQH
  • XT4 2019–2022 UQS
  • XT5 2017–2024 UQA
  • XTS 2016–2019 UQA, UQG, UQS
  • XTS 2015 UQS
• Chevrolet
  • Blazer 2019–2022 UQA, IOT, NKC
  • Camaro 2016–2022 UQ3 + NKC, UQA
  • Corvette 2014–2019 UQA or UQS
  • Equinox 2018–2024 NKC + UZ6, UQA, IOT, IOU, IOS
  • Impala 2017–2020 UQ3, UQA, UQF, UQG, UQS, NKC
  • Malibu 2018–2022 UQ3, UQA, UQF, UQG, UQS, NKC
  • Silverado 1500 2014–2018 UQA, UQG, NKC
  • Silverado 2500/3500 2015–2018 UQA, UQG, NKC
  • Suburban 2015–2020 UQA, UQS, UQH
  • Traverse 2018–2022 UQA, UQF
  • Tahoe 2015–2020 UQA, UQS, UQH
  • Trailblazer 2021–2023 UQA (5th VIN position “M”)
• GMC
  • Acadia 2018–2022 UQA, UQF
  • Sierra 1500 2014–2018 UQA, UQG, NKC
  • Sierra 2500/3500 2015–2018 UQA, UQG, NKC
  • Terrain 2018–2024 NKC + UZ6, UQA, IOT, IOU, IOS
  • Yukon 2015–2020 UQA, UQG, NKC

Note: Refer to the installation manual for ANC module location.

Technical Specifications

• Brand: Axxess
• Model: ANC-GMH1
• UPC: 86429434572
• Product Type: Active Noise Canceling (ANC) Bypass Harness
• Application: Select GM vehicles with amplified ANC audio systems (see vehicle list above)

What’s Included

• (1) Axxess ANC-GMH1 ANC bypass harness

Why Buy From MCOR Automotive

• Authorized retailer support
• Install guidance for OEM integration workflows
• Experienced 12V system design and upgrade support