Peripheral GMAHL1

Radio Replacement Interface for Select GM Vehicles with OnStar, Bose and GM-LAN Data-bus

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The Peripheral GMAHL1 is a plug and play interface that all for the replacement of a GM GMLAN Factory radio. It maintains the operation of OnStar in vehicles with Bose sound systems, amplified audio systems, and also audio systems without an external amplifier. The GMAHL1 has on-board switching that allows audio from the OnStar system to play through the two front factory speakers. This interface retains all factory warning chimes, audible turn signal indicators, factory XM Radio, and rear parking assist system. This is an all-in-one interface that eliminates the needed for multiple harnesses in specific GM LAN Vehicles.

  • Replacement interface for select GM Vehicles with OnStar, Bose, and GM LAN Data Bus
  • Compatible with or without factory amplified audio system
  • Can be used if the vehicle does not have OnStar
  • Provides 12 Volt RAP Output wire
  • Retains the 5.1 Digital audio system in select GM Vehicles
  • Adjustable OnStar volume using the factory steering wheel controls
  • Factory XM Retention (vehicles with rear seat controls)
  • Retains factory rear park assist sensor system
  • Provides a direct plug and play in to any PAC SWI Interface
  • Retains factory Bluetooth (features and functions)
  • 1-year Manufacturer's warranty
Compatible with the following GM Vehicles:
  • Chevrolet:
    • 2007 - 2009 Tahoe
    • 2007 - 2009 Suburban
    • 2007 - 2009 Avalanche
    • 2007 - 2009 Silverado (Non-Classic)
    • 2006 - 2009 Impala
    • 2006 - 2007 Monte Carlo
    • 2007 - 2008 Express
    • 2007 - 2008 Equinox
  • GMC:
    • 2007 - 2009 Yukon Denali
    • 2007 - 2009 Sierra (Non-Classic)
    • 2007 - 2009 Acadia
  • Cadillac:
    • 2007 - 2009 Escalade / ESV / EXT
    • 2007 - 2009 SRX
    • 2007 - 2009 DTS

Compatible Vehicles

Compatible Vehicle Make and Model
The model of vehicle that this vehicle specific product is designed for. Please keep in mind that engine variations can affect the compatibility of the products.

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Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
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Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Peripheral GMAHL1

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Peripheral GMAHL1

Radio Replacement Interface for Select GM Vehicles with OnStar, Bose and GM-LAN Data-bus


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