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CAUTION!
All accessories, switches, climate
controls panels, and especially air bag indicator
lights must be connected before cycling the
ignition. Also, do not remove the factory radio
with the key in the on position, or while the
vehicle is running.
AXABH-GM1
INSTALLATION INSTRUCTIONS
AxxessInterfaces.com © COPYRIGHT 2020 METRA ELECTRONICS CORPORATION REV. 1/30/20 INSTAXABH-GM1
TOOLS REQUIRED
• Crimping tool and connectors, or solder gun,
solder, and heat shrink
• Tape • Wire cutter • Zip ties
TABLE OF CONTENTS
Amplifier locations ................................................2
Connections ............................................................3
Chevrolet / GMC Amplifier Bypass Harness
2014-Up
• Amplifier bypass harness
• Vehicle-specific harness to bypass the factory amplifier
• Allows loose wires to wire to an aftermarket amplifier
• Saves the installer unnecessary labor and wire
APPLICATIONS
Chevrolet
Colorado 2015-2018
Silverado 1500 2014-2018
Silverado 2500/3500 2015-2018
Suburban 2015-Up
Tahoe 2015-Up
GMC
Canyon 2015-2018
Sierra 1500 2014-2018
Sierra 2500/3500 2015-2018
Yukon 2015-Up
Yukon XL 2015-Up
Visit AxxessInterfaces.com for more detailed information about the product and up-to-date
vehicle specific applications
2
AMPLIFIER LOCATIONS
Make/Model Amp Location
Chevrolet
Colorado 2015-2018 Behind Glovebox
Silverado 1500 2014-2018 Rear of Passenger Compartment
Silverado 2500 / 3500 2015-2018 Rear of Passenger Compartment
Suburban 2015-Up Rear Left Side Quarter Panel
Tahoe 2015-Up Rear Left Side Quarter Panel
GMC
Canyon 2015-2018 Behind Glovebox
Sierra 1500 2014-2018 Rear of Passenger Compartment
Sierra 2500 / 3500 2015-2018 Rear of Passenger Compartment
Yukon 2015-Up Rear Left Side Quarter Panel
Yukon XL 2015-Up Rear Left Side Quarter Panel
3
REV. 1/30/2020 INSTAXABH-GM1
CONNECTIONS
Green Left Rear +
Green/Black Left Rear -
Purple Right Rear +
Purple/Black Right Rear -
Blue Front Right Tweeter +
Blue/Black Front Right Tweeter -
Red/White Front Left Tweeter +
Red/Black Front Left Tweeter -
Pink Center Front + (†)
Pink/Black Center Front - (†)
Orange Subwoofer +
Orange/Black Subwoofer -
Green 16-Pin Harness:
Gray Right Front Dash and Door + (Tweeter and Midrange)
Gray/Black Right Front Dash and Door – (Tweeter and Midrange)
White Front Left Dash and Door + (Midrange and Woofer)
White/Black Front Left Dash and Door – (Midrange and Woofer)
Brown Not Used
Brown/Black Not Used
Black 8-Pin Harness:
(†) Only for models with RPO code UQS
KNOWLEDGE IS POWER
Enhance your installation and fabrication skills by
enrolling in the most recognized and respected
mobile electronics school in our industry.
Log onto www.installerinstitute.com or call
800-354-6782 for more information and take steps
toward a better tomorrow.
®
Metra recommends MECP
certified technicians
IMPORTANT
If you are having difficulties with the installation of this product,
please call our Tech Support line at 1-800-253-TECH. Before doing
so, look over the instructions a second time, and make sure the
installation was performed exactly as the instructions are stated.
Please have the vehicle apart and ready to perform troubleshooting
steps before calling.
AxxessInterfaces.com © COPYRIGHT 2020 METRA ELECTRONICS CORPORATION REV. 1/30/20 INSTAXABH-GM1
INSTALLATION INSTRUCTIONS
AXABH-GM1
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