this harness when replacing your factory stereo with an aftermarket radio while still retaining the vehicle's OnStar and Bose amplifier system
This harness will give you the ability to also retain the warning chimes (some vehicles might require the CM1 chime module)
A steering wheel interface will be required if you would like to retain the factory steering wheel controls to use on the new radio
This adapter will not retain the factory XM radio, rear seat controls and headphones, or rear seat DVD if equipped
The OS-2Bose uses a Data Link Controller chip (DLC) that is specifically designed for connecting to GM's Class 2 data bus
Radio controls can be retained to control new radio by using a PAC SWI interface


Vehicle Compatibility:

Buick:
2005-2007 LaCrosse
2004-2007 Rainier
2003-2007 Rendezvous
2005-2007 Terraza

Cadillac:
2003-2006 Escalade

Chevrolet:
2003-2006 Avalanche
2004-2009 Colorado
2005-2008 Corvette
2003-2007 Express
2000-2005 Impala
2001-2003 Malibu
2000-2005 Monte Carlo
2003-2004 S-10
2003-2006 SIlverado
2007 Silverado Classic
2003-2006 SSR
2003-2006 Suburban
2003-2006 Tahoe
2002-2009 Trailblazer
2006-2009 Uplander
2003-2005 Venture

GMC:
2004-2009 Canyon
2002-2009 Envoy
2003-2007 Savana
2003-22006 Sierra
2007 Sierra Classic
2003-2006 Yukon

Hummer:
2004-2007 H2
2005-2008 H3

Oldsmobile:
2001-2004 Alero
2002-2004 Bravada
2000-2004 Silhouette

Pontiac:
2001-2005 Grand Am
2004-2008 Grand Prix
2001-2006 Montana
2000-2005 Sunfire

Saab:
9-7X