AXXESS AXTC-LN31 GM Data Interface with SWC 2019-Up Instruction Manual

: June 6, 2024
: AXXESS

Table of Contents

AXXESS AXTC-LN31 GM Data Interface with SWC 2019-Up
APPLICATIONS
INTERFACE FEATURES
INTERFACE COMPONENTS
TOOLS & INSTALLATION ACCESSORIES REQUIRED
Product Info
CONNECTIONS
PROGRAMMING
TROUBLESHOOTING
Final LED Feedback
Tech Support Hours (Eastern Standard Time)
References
Read User Manual Online (PDF format)
Download This Manual (PDF format)

AXXESS AXTC-LN31 GM Data Interface with SWC 2019-Up

APPLICATIONS

INTERFACE FEATURES

Provides retained accessory power (10-amp)
Provides illumination, parking brake, reverse, and speed sense outputs
Retains warning chimes through an onboard speaker
Retains the factory backup camera
Retains audio controls on the steering wheel
Designed to be compatible with all major radio brands
Auto-detects vehicle type, radio connection, and preset controls
Ability to dual assign steering wheel control buttons
Retains memory settings even after battery disconnection or interface removal (nonvolatile memory)
Designed for non-amplified models, or when bypassing a factory amplifier
Retains balance and fade
Micro-B USB updatable

† The radio code can be found in the Service Parts Identification Label located:
Glove box – Equinox/Terrain
QR only (see note) – Camaro/Canyon/Colorado/Malibu/Sierra/Silverado
Note : Newer model GM vehicles are transitioning to a QR style label. If the Ser-vice Parts Identification Label is not located where listed, reference the Vehicle Certification Label on the inside of the driver’s door opening for the QR code.

INTERFACE COMPONENTS

AXTC-LN31 interface
AXTC-LN31 harness
3.5mm adapter

TOOLS & INSTALLATION ACCESSORIES REQUIRED

• Crimping tool and connectors, or solder gun, solder, and heat shrink • Tape • Wire cutter
• Zip ties

Product Info

CONNECTIONS

AXXESS AXTC-LN31 GM Data Interface with SWC 2019-Up
fig1

PROGRAMMING

AXXESS AXTC-LN31 GM Data Interface with SWC 2019-Up
fig2

Open the driver’s door, and keep open during the programming process.
Cycle the ignition on.
Connect the AXTC-LN31 harness to the AXTC-LN31 interface, and then to the wiring harness in the vehicle.
Locate the Volume Up button on the steering wheel. Program the interface by tapping the Volume Up button until the LED stops flashing.
The LED will flash Green & Red while the interface programs the radio to the steering wheel controls. Once programmed, the LED will go out, then produce a pattern which will identify the radio type installed. Refer to the Radio LED Feedback section under Troubleshooting for radio types.
The LED will go out, then once again quickly flash Green & Red while the interface programs itself to the vehicle. Once programmed, the LED will go out again, then turn solid Green.
Cycle the ignition off, then back on.
Test all functions of the installation for proper operation.

TROUBLESHOOTING

If the interface fails to function, press and release the reset button, then repeat the programming process from step 4 to try again.

Further troubleshooting steps and information can be located at:
axxessinterfaces.com/product/AXTC-LN31

Final LED Feedback

At the end of programming the LED will turn Solid Green which indicates programming was successful. If the LED didn’t turn Solid Green, reference the list below to understand which programming section the problem may stem from.

Note: If the LED shows Solid Green for Pass (indicating everything programmed correctly), yet the steering wheel controls don’t work, make sure that the 3.5mm jack is plugged in, and plugged into the correct jack in the radio. Once corrected, press the reset button, then program again.

Having difficulties? We’re here to help.

Contact our Tech Support line at:
386-257-1187
Or via email at:
techsupport@metra-autosound.com