INTERFACE COMPONENTS
• GMOS-MOST-01 interface
• GMOS-MOST-01 harness
• 16-pin harness with stripped leads
APPLICATIONS
CHEVROLET
Colorado (I05 / I06)
2015-2018
Silverado LD (I05 / I06)
Silverado 1500
Suburban
(I03 / I05 / I06)
2014-2018
Tahoe
Silverado 2500/3500
(I03 / I05 / I06)
2015-2019
AxxessInterfaces.com
GM MOST
INTERFACE FEATURES
• Provides accessory power
(12-volt 10-amp)
• Maintains the retained
accessory power (R.A.P.) feature
• Retains OnStar / OE Bluetooth
• Retains warning chimes
• Provides NAV outputs (parking
brake, reverse, speed sense)
• Backup camera harness
• 10-pin jumper harness
• 12-pin jumper harness
GMC
2019
Canyon
2015-2021
Sierra 1500
2015-2020
(I03 / I05 / I06)
Sierra 2500/3500
(I03 / I05 / I06)
© COPYRIGHT 2021 METRA ELECTRONICS CORPORATION
Amplifier Interface
2014-2021
®
• Requires ASWC-1 (sold separately)
if steering wheel audio controls
are desired to be retained
• Retains the factory AUX-IN jack
• Retains the factory backup
camera
• Used in MOST® amplified
applications
• Retains balance
• Micro-B USB updatable
2015-2018
Sierra Limited (I05 / I06)
Yukon / Yukon XL
2014-2018
2015-2019
GMOS-MOST-01
I N S TA L L AT I O N I N S T R U C T I O N S
TABLE OF CONTENTS
Connections ........................................................ 2-4
Installation .............................................................5
Programming .....................................................5-6
Audio level adjustment ........................................7
TOOLS REQUIRED
• Crimping tool and connectors, or solder gun,
solder, and heat shrink
• Small flat blade screwdriver • Tape
• Wire cutter • Zip ties • T-15 Torx screwdriver
Product Info
2019
2015-2020
REV. 3/17/21 INSTGMOS-MOST-01