Radio wire harness and antenna adapter for installing an aftermarket radio. This wire harness adapter allows the replacement of a factory radio in select General Motors vehicles with Class II radios. This adapter will retain factory features such as warning chimes and provides a data-bus generated 12-volt retained accessory power output (RAP). RAP keeps the radio powered after key-off, just like the factory system. Important: Wire harness only works with standard and standard Bose/Amp systems. Will not work with the Digital Bose systems usually identified as Y91 or UQA. Will not retain some features like steering audio controls, Onstar, etc- extra adapters required. Compatible with: 2004-2005 Buick Century, 2004-2007 Buick Rainier, 2002 - 2007 Buick Rendezvous, 2003 - 2006 Chevrolet Avalanche, 2003 - 2005 Chevrolet Blazer (S-10), 2000 - 2005 Chevrolet Cavalier, 2004 - 2012 Chevrolet Colorado, 2003 - 2007 Chevrolet Express, 2000 - 2001 Chevrolet Impala, 2002 - 2005 Chevrolet Impala, 2001 - 2003 Chevrolet Malibu, 2004 - 2005 Chevrolet Malibu Classic, 2000 - 2005 Chevrolet Monte Carlo, 2003 - 2004 Chevrolet S-10, 2003 - 2006 Chevrolet Silverado, 2004 - 2006 Chevrolet SSR, 2003 - 2006 Chevrolet Suburban, 2003 - 2006 Chevrolet Tahoe, 2002 - 2009 Chevrolet Trailblazer, 2000 - 2006 Chevrolet Venture, 2004 - 2012 GMC Canyon, 2002 - 2008 GMC Envoy, 2003 - 2007 GMC Savana, 2003 - 2006 GMC Sierra, 2003 - 2006 GMC Yukon, 2003 - 2008 Isuzu Ascender, 2001 - 2004 Oldsmobile Alero, 2002 - 2006 Oldsmobile Bravada, 2000 - 2006 Oldsmobile Silhouette, 2001 - 2005 Pontiac Aztec, 2001 - 2006 Pontiac Grand Am, 2000 - 2006 Pontiac Montana, 2000 - 2005 Pontiac Sunfire