PRODUCT DESCRIPTION: 

PAC OS1BOSE Radio Interface w/OnStar & Bose for GM 2002 & Earlier Vehicles

Retains the function of OnStar® and Bose amplified audio system when the factory radio is replaced. Generates all safety warning chimes.
 
Retains OnStar® when the factory radio is replaced
Retains all safety warning chimes
Retains Bose amplified audio system
Maintains a "healthy" status on the Class II databus
Plug-in installation for vehicles with 21-pin harness

MODEL #: OS1BOSE