Axxess
Axxess AXSUB-GM3 Add-A-Sub Interface for select Chevrolet and GMC 2019-2023 vehicles
Axxess AXSUB-GM3 Add-A-Sub Interface for select Chevrolet and GMC 2019-2023 vehicles
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Axxess AXSUB-GM3 is a vehicle-specific Add-A-Sub data interface designed to add aftermarket subwoofer signal to compatible factory-radio systems. The patented AXSUB interface processes low-frequency signal that may be limited by the factory radio, helping an added subwoofer amplifier perform properly while the factory source unit remains in place.
At a Glance
- Plug-and-play Add-A-Sub data interface for adding an aftermarket subwoofer while retaining the factory radio
- Designed for non-amplified systems
- 2-channel non-fading 5V RMS output
- Fixed low-pass frequency of 234Hz
- 250mA remote turn-on output
- Bass knob included for subwoofer level control
- Vehicle-specific harness included
- Installation done at the radio location
- Micro-B USB updatable
Exact Vehicle Compatibility
Find your vehicle below, then match the model year and factory-equipment details in the same row. Factory radio, amplifier, navigation, trim, speaker location, and connector differences can change which installation parts are required. If anything differs, contact MCOR before ordering.
| Make | Model | Years | Factory Equipment / Qualifier |
|---|---|---|---|
| Chevrolet | Blazer | 2019-2023 | IOT or IOU; Factory amplifier location: N/A |
| Chevrolet | Camaro | 2019-2023 | IOS or IOT; Factory amplifier location: N/A |
| Chevrolet | Cheyenne | 2019-2021 | IOS or IOT; Factory amplifier location: Rear Passenger Behind Seat, Mounted Below the Rear Window by Floor. |
| Chevrolet | Colorado | 2019-2022 | New Style; IOS or IOT; Factory amplifier location: Rear Passenger Behind Seat, Mounted Below the Rear Window by Floor. |
| Chevrolet | Equinox | 2019-2023 | IOS or IOT; Factory amplifier location: Beneath Center Console, below Instrument Panel. |
| Chevrolet | Malibu | 2019-2022 | IOU or IOS; Factory amplifier location: Right Rear of Trunk, Behind Trim Panel. |
| Chevrolet | Silverado | 2019-2021 | IOS or IOT; Factory amplifier location: Rear Passenger Behind Seat, Mounted Below the Rear Window by Floor. |
| Chevrolet | Traverse | 2020-2022 | IOS or IOT; Factory amplifier location: Below Center Console. |
| GMC | Acadia | 2020-2022 | IOU; Factory amplifier location: N/A |
| GMC | Canyon | 2019-2022 | IOS or IOT; Factory amplifier location: N/A |
| GMC | Sierra | 2019-2021 | Factory amplifier location: N/A |
| GMC | Terrain | 2019-2022 | IOS, IOT or IOU; Factory amplifier location: N/A |
Fitment note: Year and model alone are not always enough to confirm compatibility. Match every factory-equipment qualifier shown for your vehicle, and contact MCOR Automotive if the radio, amplifier, navigation, speaker, camera, trim, or connector details are uncertain.
Installation Notes
- Installs at the radio location using the vehicle-specific harness
- Designed to provide subwoofer amplifier signal and remote turn-on output without replacing the factory radio
- Bass knob provides convenient subwoofer level control
- Professional installation is recommended for amplifier integration, gain setup, and subwoofer tuning
- Check the latest Metra / Axxess instructions before installation
What’s in the Box
- Axxess AXSUB-GM3 Add-A-Sub interface
- Vehicle T-harness
- Bass knob
Technical Specifications
- Brand: Axxess
- Model: AXSUB-GM3
- Product Type: Vehicle-specific Add-A-Sub data interface
- Application: select Chevrolet and GMC 2019-2023 vehicles
- Vehicle System: non-amplified systems
- Audio Output: 2-channel non-fading 5V RMS output
- Low-Pass Frequency: Fixed 234Hz
- Remote Output: 250mA remote turn-on output
- Update Port: Micro-B USB
- Sold As: Each
Identifiers & Packaging
- MPN: AXSUB-GM3
- UPC: 086429435272
- Sold As: Each
- Included Components: Axxess AXSUB-GM3 Add-A-Sub interface, Vehicle T-harness, Bass knob
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
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