Retains Steering Wheel Controls, Onstar, Bose, and Rear Seat Entertainment  OnStar & Chime Retention Module Can be used in non-amplified, or analog/digital amplified models COMPATIBLE VEHICLES BUICK  2004 - 2007 Rainier  2002 - 2007 Rendezvous  CADILLAC  2003 - 2006 Escalade  2004 - 2006 Escalade ESV  2004 - 2006 Escalade EXT  CHEVROLET  2003 - 2006 Avalanche 1500 /2500 2003 - 2005 Blazer  2000 - 2005 Cavalier  2004 - 2012 Colorado  2003 - 2006 Express 1500 /2500 2000 - 2005 Impala  2001 - 2003 Malibu  2000 - 2005 Monte Carlo  2004 S10  2003 - 2006 Silverado 1500 /2500 HD/ 3500 2007 Silverado Classic only (made like 2006)  2004 - 2006 SSR  2003 - 2006 Suburban 1500 /2500 2003 - 2006 Tahoe  2002 - 2009 Trailblazer  2000 - 2005 Venture - Integrated Door Chimes Only  GMC  2004 - 2012 Canyon  2002 - 2009 Envoy  2003 - 2007 Savana 1500 /2500 2003 - 2006 Sierra 1500 /2500 HD 2007 Sierra Classic only (made like 2006)  2002 - 2004 Sonoma  2003 - 2006 Yukon /XL 1500 / XL 2500  HUMMER  2003 - 2006 H1  2003 - 2007 H2   ISUZU  2004 - 2008 Ascender  2006 - 2008 i280 / i290 / i350   OLDSMOBILE  2002 - 2004 Bravada  2002 Intrigue  2000 - 2004 Silhouette - Integrated Door ChimesOnly  PONTIAC  2001 - 2005 Aztek  2000 - 2005 Montana - Integrated Door Chimes Only  2000 - 2005 Sunfire