
AXTC-LN44
INSTALLATION INSTRUCTIONS
AxxessInterfaces.com © COPYRIGHT 2025 METRA ELECTRONICS CORPORATION REV. 9/18/25 INSTAXTC-LN44
FEATURES
COMPONENTS
TOOLS & INSTALLATION ACCESSORIES REQUIRED
• Crimping tool and connectors, or solder gun,
solder, and heat shrink • Tape • Wire cutter
• Zip ties
TABLE OF CONTENTS
Applications ...........................................................2
Connections ............................................................3
Programming .........................................................4
Troubleshooting.....................................................5
Data Interface with SWC
Fits Select GM Models 2008-2016
• Designed for non-amplified
models, or when bypassing a
factory amplifier
• Provides accessory power (12-
volt 10-amp)
• Retains R.A.P. (Retained
Accessory Power)
• Provides NAV outputs (parking
brake, reverse, and speed
sense)
• Built-in features like SWC &
Auto-Detect
• Auto-detect feature -
automatically detects the
vehicle type, radio connection,
and preset controls
• Ability to dual assign steering
wheel control buttons
• Designed to work with a major
radio brands
• Can be manually programmed
for most vehicles
• Retains settings, even after
battery disconnection
• Retains warning chimes through
onboard speaker
• Retains balance & fade
• Micro “B” USB updatable
• AXTC-LN44 interface
• AXTC-LN44 harness
• 3.5mm adapter
APPLICATIONS
See inside front cover
Product Info
ATTENTION: With the key out of the ignition,
disconnect the negative battery terminal
before installing this product. Ensure that all
installation connections, especially the air
bag indicator lights, are plugged in before
reconnecting the battery or cycling the ignition
to test this product.
NOTE: Refer also to the instructions included
with the aftermarket accessory before
installing this device.
Visit AxxessInterfaces.com for more detailed information
about the product and up-to-
date vehicle specific applications.