Introduction
The Axxess AX-GMCL2-SWC Data Interface is designed for aftermarket head unit installations in select GM vehicles from 2000 to 2013. This interface provides essential functionalities such as accessory power, retention of Retained Accessory Power (RAP), chimes, steering wheel audio controls, and the factory auxiliary input. It also ensures the retention of OnStar and original equipment (OE) Bluetooth capabilities. This unit is compatible with both non-amplified and analog/digital amplified vehicle models.
Package Contents
- Axxess GM Data Interface (AX-GMCL2-SWC)
- Vehicle-specific wiring harnesses
- Instruction manual (this document)
Image: The Axxess AX-GMCL2-SWC data interface module (black box) and the accompanying wiring harnesses, including vehicle-specific connectors, RCA cables, and bare wire leads for various connections.
Setup and Installation
Installation of the AX-GMCL2-SWC requires careful attention to wiring connections. It is recommended that installation be performed by a qualified professional.
Compatibility
This interface is designed for specific GM vehicles manufactured between 2000 and 2013. Verify your vehicle's compatibility before proceeding with installation.
Wiring Connections
Connect the provided wiring harnesses to your aftermarket head unit and the vehicle's factory wiring. Key connections include:
- Accessory Power: Provides a 12-volt 10-amp accessory output.
- NAV Outputs: Includes outputs for parking brake, reverse, mute, and speed sense signals, essential for navigation-equipped head units.
- Steering Wheel Control (SWC): Connect the SWC wire(s) to your aftermarket radio's steering wheel control input. Refer to your radio's manual for specific wiring.
- Audio Connections: Ensure proper connections for audio signals, including retention of balance and fade.
- Chime Module: The interface integrates with the vehicle's chime system. Adjust chime volume using the potentiometer on the module if available.
Always consult the detailed wiring diagram provided with your specific product packaging for precise color-coded connections.
Initial Configuration
After all connections are made, follow the specific power-up and programming sequence outlined in the product's included quick-start guide to ensure proper communication between the interface and your aftermarket radio. This typically involves turning the ignition on and off in a specific pattern.
Operating Instructions
Once installed and configured, the AX-GMCL2-SWC enables the following retained features:
- Steering Wheel Controls: Operate volume, track/station, mode, and other functions directly from your vehicle's steering wheel buttons.
- Retained Accessory Power (RAP): The radio will remain on for a short period after the ignition is turned off, until a door is opened, mimicking factory behavior.
- Vehicle Chimes: All factory warning chimes (e.g., seatbelt, door ajar) will be reproduced through the aftermarket audio system.
- OnStar and OE Bluetooth: If your vehicle is equipped, these features will continue to function through the interface.
- Factory Auxiliary Input: The original auxiliary input, if present, will be retained and accessible through your new head unit.
Maintenance
The AX-GMCL2-SWC is designed for long-term reliability and typically requires minimal maintenance. Consider the following:
- Secure Connections: Periodically check that all wiring connections remain secure and free from corrosion.
- Firmware Updates: The module is Micro B USB updatable. Check the Axxess website for any available firmware updates that may improve performance or address compatibility issues. Use the official PC software for updates.
- Environmental Factors: Ensure the module is installed in a dry, stable environment within the vehicle's dashboard, away from excessive heat or moisture.
Troubleshooting
If you encounter issues with your AX-GMCL2-SWC, review the following common troubleshooting steps:
- No Power to Radio:
- Verify all power and ground connections are secure.
- Check vehicle fuses.
- Ensure the interface module is properly connected to the vehicle's data bus.
- Steering Wheel Controls Not Functioning:
- Confirm the SWC wire from the interface is correctly connected to the aftermarket radio's SWC input (e.g., 3.5mm jack or specific wire).
- Ensure the interface is programmed for your specific radio brand/model. If auto-detection fails, use the PC software for manual configuration.
- Some steering wheel buttons (e.g., "Source Down" or "OnStar" on older GM models) may not be remappable or supported by all aftermarket radios.
- No Chimes or Incorrect Chime Volume:
- Verify the chime module connections.
- Adjust the potentiometer on the AX-GMCL2-SWC module to set the desired chime volume.
- Dimmer Control Issues:
- Check the dimmer wire connection between the interface and the aftermarket radio.
- Ensure the aftermarket radio's dimmer settings are correctly configured.
- Vehicle System Malfunctions (e.g., Speedometer erratic, vehicle not starting):
- Immediately disconnect the interface and revert to factory wiring if possible.
- These symptoms indicate a serious wiring error or module malfunction. Seek professional assistance.
- Firmware Update Problems:
- Ensure you are using the correct and latest PC software from Axxess.
- Use a reliable USB cable and ensure stable power to the module during updates.
If problems persist after following these steps, contact Axxess technical support for further assistance.
Specifications
| Product Dimensions | 9.3 x 4.2 x 2.4 inches |
| Item Weight | 12 ounces |
| Model Number | AX-GMCL2-SWC |
| ASIN | B01MG2F61T |
| Manufacturer | Petra Industries |
| First Available Date | October 21, 2016 |
Warranty and Support
Warranty Information
For detailed warranty information regarding the Axxess AX-GMCL2-SWC Data Interface, please refer to the documentation included with your purchase or visit the official Axxess website. Warranty terms and conditions are subject to change by the manufacturer.
Technical Support
If you require technical assistance or have questions not covered in this manual, please contact Axxess technical support directly. Contact information can typically be found on the manufacturer's official website or in the product packaging.
