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Metra GMOS-02

General Motors Class II data bus interface
Retains ONSTAR system, factory door chime, and Bose system with aftermarket radio

Item # 120GMOS02

Problem: Installing an aftermarket receiver in many late model (2002-up) General Motors SUVs and pickups means...

Find what Fits your car

Problem: Installing an aftermarket receiver in many late model (2002-up) General Motors SUVs and pickups means...

Discontinued item

Item # 120GMOS02

About the Metra GMOS-02

Problem: Installing an aftermarket receiver in many late model (2002-up) General Motors SUVs and pickups means losing ONSTAR system functions, the Bose amplified speaker system, audible safety warnings, and the chime that warns the door is open.

Problem: Installing an aftermarket receiver in many late model (2002-up) General Motors SUVs and pickups means losing ONSTAR system functions, the Bose amplified speaker system, audible safety warnings, and the chime that warns the door is open.

Solution: Metra's GMOS-02 GM Class II data bus interface lets you replace the factory receiver in these vehicles and keep all these functions. Hook the interface to your aftermarket radio, mount the module in a location where the chime can be heard, and plug it into the existing factory plug. You'll get the great sound you want, and keep these important features intact. The Bose amplified speakers and the ONSTAR system will operate with your new radio, as well as the door chime and audible safety warnings.

Also, once you turn off the ignition in these GM vehicles, the factory radio continues to play until you open the door. This interface maintains that function with your new aftermarket radio. This interface is compatible with select 2002-and up GMC, Chevrolet, Oldsmobile, Cadillac, and Hummer SUVs and trucks. Warranty: 1 year.

Important Note: If you haven't done so already, please enter your vehicle information or call a Sales Advisor at 1-888-955-6000 to find out if your GM vehicle's warning chimes are integrated with the factory radio. If so, certain warning chimes in your vehicle may be disabled by installation of an aftermarket receiver. You must use the recommended Crutchfield integration adapter to retain the warning chimes. Failure to do so may result in serious injury or death.

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What's in the box:

  • GM Class II data bus interface (has a white 10-pin male connector on one end and a white 12-pin male connector on the other end)
  • 6" Twelve-pin harness
  • 10" Ten-pin harness
  • Instructions
MFR #GMOS-02

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More details on the Metra GMOS-02

Stacey B.

Product Research

Features

Overview: The GMOS-02 interface is compatible with select 2002-and up GMC, Chevrolet, Oldsmobile, Cadillac, and Hummer SUVs and trucks. The interface allows you to install an aftermarket receiver in a compatible vehicle without losing the following: ONSTAR system functions, Bose amplified speaker system, audible safety warnings, and the chime that warns the door is open. The GMOS-02 will also keep the radio on until the front driver door is opened.

Connections: The 12-pin wiring harness has a white 12-pin female connector (10 pins present) on one end and the following connectors on the other end: a gray 24-pin male connector (10 pins present) and a black 12-pin male connector (2 pins present). The white 12-pin connector plugs into the GMOS-02, the gray 24-pin connector interfaces with the existing factory plug, and the black 12-pin connector interface with the vehicle's ONSTAR system. The 10-pin wiring harness has a white 10-pin female connector (6 pins present) on one end and left and right RCA audio connectors on the other end. The white 10-pin connector plugs into the GMOS-02 and the RCA connectors plug into the aftermarket radio.

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