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Applications: The OS-1 BOSE is
an interface that allows for the replacement of a GM factory radio,
that doesn't have RDS, and maintain the operation of the OnStar navigational
system and the factory GM Bose sound system. The OS-1 BOSE has on board
switching and amplification that allows the audio from the OnStar system to play
through the front speakers when OnStar is active, and mutes the replacement
Compatibility: The OS-1 BOSE is
compatible with the following select 2002 and older General Motors vehicles: Chevy Avalanche, Cadillac Escalade,
Chevry Silverado, GMC Sierra, Chevy Surburban, Chevy Tahoe, and GMC Yukon, plus 2000 and older Chevy Blazer,
GMC Jimmy and Chevy Lumina. It will also work in some 1999-2003 Pontiac Grand Prix and 98-99 Bonneville. The OS-1 BOSE will interface with all GM radios that use 21-pin/9-pin connectors and have Bose
amplifier/speakers. If there is an "RDS" logo on the face of the
radio, this interface will not work. Please check the Crutchfield Vehicle
Selector for compatibility with your vehicle.
Contents: The OS-1 BOSE
interface consists of the OS-1 On-Star interface and the OEM-1 Premium Sound
Interface, plus the wire harnesses that plug between the two interfaces and the
factory sound system and On-Star system.
Left and Right Gain Controls:
The OS-1 adapter has independent left and right controls that adjust the level
of audio coming from the OnStar system.
LED Indicator: This is an
indicator on the OS-1 that lights up when OnStar is active.