Axxess ANC-GMH3 ANC Bypass Harness for Select Non-Amplified GM ANC Audio Systems

The Axxess ANC-GMH3 is an active noise canceling bypass harness for select non-amplified GM ANC audio systems including Cadillac CT6 applications. It is used during aftermarket speaker, amplifier, or subwoofer upgrades where the factory ANC system can create unwanted noise or audio interference.

Key Features

• Active noise canceling bypass harness for non-amplified GM ANC systems
• Supports select GM RPO audio configurations
• Helps prevent ANC-related noise after speaker or subwoofer upgrades
• Quality connectors for reliable integration
• 1-year limited warranty

System / Fitment Notes

• Designed for select non-amplified GM ANC systems
• Confirm RPO and vehicle compatibility before installation
• Metra lists Cadillac CT6 applications for this harness

Vehicle Compatibility

Installation Notes

• Confirm exact year, make, model, trim level, factory radio, and factory audio system before installation
• Test-fit components and review manufacturer instructions before final assembly
• Additional parts may be required depending on vehicle equipment, radio selection, speaker selection, or wiring configuration
• Professional installation recommended

What’s in the Box

• Axxess ANC-GMH3 bypass harness
• Instruction sheet

Technical Specifications

• Brand: Axxess
• Model: ANC-GMH3
• Product Type: Active Noise Canceling Bypass Harness
• Application: select non-amplified GM ANC audio systems including Cadillac CT6 applications
• Compatibility Type: Vehicle-specific ANC bypass
• Factory System: Non-amplified GM ANC systems

Identifiers & Packaging

• MPN: ANC-GMH3
• UPC: 086429431168
• Sold As: Each
• Included Components: Axxess ANC-GMH3 bypass harness, Instruction sheet

Why Buy From MCOR Automotive

• Authorized retailer for the brands we sell
• Specialists in vehicle audio integration, radio replacement parts, and installation accessories
• 22+ years of professional automotive electronics experience
• Expert support for compatibility verification and proper setup