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Metra GMOS04 Onstar for all GM Bypass

Metra Onstar for all GM Bypass - GMOS04 - IN STOCK

Metra Onstar for all GM Bypass

GMOS04

  • Provides accessory (12 volt 10 amp)
  • Retains R.A.P.
  • USB updatable
  • Availability: In Stock! Ships in 24 - 48 Hours
  • Shipping: FedEx (details)
  • Part #: GMOS04
  • $109.99
Free Shipping

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Description of Metra GMOS04:

The GMOS-04 interface is designed to allow the user to replace the OEM radio with an aftermarket unit in amplified GM vehicles and retain full functionality of the OnStar system as well as all safety and warning chimes. The GMOS-04 will also retain the retained accessory power convenience features. This interface has the capability of adjusting chime and OnStar volumes as well. In addition to these features, the GMOS-04 now has the required outputs for the installation of a navigation radio.



  • Provides accessory (12-volt 10-amp)
  • Retains R.A.P. (retained accessory power)
  • Used in amplified systems
  • Retains chimes
  • Provides NAV outputs (parking brake, reverse, mute, V.S.S.)
  • ASWC-1 harness included (ASWC-1 not included)
  • Retains OnStar/OE Bluetooth
  • Adjustable volume for chimes and OnStar
  • High level speaker input
  • USB updatable
  • Retains balance and

    • Compatible with amplified GM vehicles
    • Cavalier.2005 - 2007
    • Corvette.2003 - 2007
    • Express.2000 - 2005
    • Impala.2002 - 2003
    • Malibu.2000 - 2005
    • Monte Carlo. 2003 - 2006
    • Silverado. 2003 - 2006
    • SSR. 2003 - 2006
    • Buick: 2005 - 2007
    • Allure.2004 - 2005
    • Century. 2005 - 2007

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Metra Onstar for all GM Bypass - GMOS04 - IN STOCK

Metra Onstar for all GM Bypass

GMOS04

  • Provides accessory (12 volt 10 amp)
  • Retains R.A.P.
  • USB updatable

In Stock! Ships in 24 - 48 Hours

Free Shipping
  • $109.99

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