OnStar Interface with Bose (OS1 BOSE, OS1BOSE) for Select 1996-2003 Chevrolet and Pontiac Vehicles

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Arrives by Tuesday, July 25 to zip 20147

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Product Features:

  • Retains OnStar in 1998-2002 GM SUVs & trucks when replacing radio
  • Generates all safety warning chimes
  • Plug-in installation for vehicles with 21-pin harness
  • Cutting or splicing into factory plug
  • OS1-BOSE communicates directly with the OnStar module to prevent false triggering & eliminating unwanted audio noise
  • Use with the existing factory speakers or use external speakers
  • For 1998-2002 BOSE-equipped vehicles
  • 1-year warranty

Compatible Vehicles

  • Cadillac
    • 1999 - 2002 Escalade
  • Chevrolet
    • 2002 Avalanche
    • 1999 - 2001 Blazer (S-10)
    • 1998 - 2002 Silverado
    • 1998 - 2002 Suburban
    • 1998 - 2002 Tahoe
    • 1998 - 2002 Venture
  • GMC
    • 1998 - 2002 Yukon
    • 1998 - 2002 Yukon Denali
    • 1998 - 2002 Yukon XL
  • Pontiac
    • 1998 - 1999 Montana

Note: The OS-1Bose® will not work with OnStar® equipped vehicles that have factory radios with RDS (Class 2 headunits). Factory radio's with RDS can be indentified by locating an RDS logo on the front face of the factory radio.


  • Yellow – 12V Constant
  • Red – 12V Accessory
  • Black - Ground
  • Orange – Dash Light Dimmer/Illumination
  • Green – Left Rear Speaker (+)
  • Green with Black Stripe Left Rear Speaker (-)
  • White – Left Front Speaker (+)
  • White with Black Stripe – Left Front Speaker (-)
  • Purple – Right Rear Speaker (+)
  • Purple with Black Stripe – Right Rear Speaker (-)
  • Gray – Right Front Speaker (+)
  • Gray with Black Stripe – Right Front Speaker (-)

Check out the OS1-BOSE Owner's Manual

Harness Features

Vehicle Sound System
This refers to what kind of sound system the vehicle has. Premium audio systems are generally name brand systems (such as JBL, Bose, Rockford Fosgate, etc) that have been installed inside a vehicle when it leaves the factory. Often they more advanced systems, complex wiring, factory amplifiers, and other features that can make installing aftermarket component difficult.
Premium Sound
Main Harness Function
Different installations on different vehicles require different harnesses. This type is what the harness is considered. Each wiring harness we sell serves a purpose such as installing an aftermarket car stereo, integrating an aftermarket amplifier with your factory car stereo, connecting Bluetooth to your factory car stereo, and more.
Connect/Install an Aftermarket Car Stereo
Additional Harness Features
The various features that the wiring harness provides to your car stereo and/or audio system.
OnStar Retention
Compatible Vehicle Make
Allows you to view only items that are compatible with your vehicle's make. Does not guarantee that it will work with your vehicle year or model.
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.
Chevy Blazer
Chevy Colorado
Chevy S-10
Chevy Silverado
Chevy Suburban
Chevy Tahoe
Pontiac Grand Prix

Premium Harness Features

On-Star Compatible
This means that the harness is compatible with vehicles that have On-Star built-in.

Warranty and Return Policy

Parts Warranty Duration
1 year
Labor Warranty Duration
1 year
Warranty Provider

Summary of Customer Ratings & Reviews

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Browse 1 question
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I have a 2008 nissan 350z convertable built navigation system I have a bose radio in the car I was look for wire harness for the satellite radio box?
joe D on Jul 11, 2016
· Add Answer · I Have This Question Too (0)

Product Summary


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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: PAC OS-1 BOSE

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OnStar Interface with Bose (OS1 BOSE, OS1BOSE) for Select 1996-2003 Chevrolet and Pontiac Vehicles


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