OnStar Interface for Amplified GM Systems Retains RAP featureRetains OnStar with adjustable volume output</br>Cavalier.2005 - 2007 Corvette.2003 - 2007 Express.2000 - 2005 Impala.2002 - 2003 Malibu.2000 - 2005 Monte Carlo. 2003 - 2006 Silverado. 2003 - 2006 SSR. 2003 - 2006</br>Retains chime with adjustable volume outputInterface designed to allow for the replacement of the OEM Radio with an aftermarket unit in amplified GM Vehicles with Premium or Bose audio systems. Retains full functionality of the OnStar system with adjustable volume output.</br>Compatible with amplified GM vehicles (Does not work with NON-Amplified models)</br>Compatible with the following vehicle: Buick: 2005 - 2007 Allure.2004 - 2005 Century. 2005 - 2007 .For amplified audio systems premium and Bose</br>This product fits the following vehicles:Allure 2005-2009Lacrosse 2005-2009Rainier 2004-2007Rendezvous 2002-2007Terraza 2005-2008Century 2004-2005</br>CADILLAC Escalade 2003-2006Escalade EXT 2003-2006</br>CHEVROLET Avalanche 2003-2006Cavalier 2000-2005Colado 2004-2009Corvette 2005-2011Express van (full size) 2003-2007Impala 2000-2005Malibu (2004-05 Classic only) 2001-2005Monte Carlo 2000-2005Silverado Pickup Classic 2007-2007Silverado Pickup (all models) 2003-2006SSR 2003-2006Suburban 2003-2006Tahoe 2003-2006Trailblazer 2002-2009Uplander 2005-2008Venture Van 2000-2005</br>GMC:Canyon 2004-2010Envoy 2002-2009Savanna Full Size Van 2003-2007Sierra (Classic) 2003-2007Yukon / Yukon XL / Denali 2003-2006</br>HUMMER:H2 2003-2007H3 2006-2009</br>ISUZU:Ascender 2003-2008I290 2007-2008I280 2006-2006I370 2007-2008I350 2006-2006</br>OLDSMOBILE:Alero 2001-2004Bravada 2002-2004Intrigue 2002-2002Silhouette 2000-2004</br>PONTIAC:Aztec 2001-2005Grand Am 2001-2005Grand Prix 2004-2008Montana 2000-2005Sunfire 2000-2005</br>SAAB: 9-7x 2005-2009Saturn Relay 2005-2007</br>USB update interface compatible??For amplified audio systems premium and Bose</br>Retains Onstar w/adjustable volume output?? Retains chime with adjustable volume output</br>Retains RAP feature?? Navigation outputs now included</br></br>Product Description</br></br>Interface designed to allow