Radio harness for GM comes with 40-GM10 antenna adapter, connects factory antenna to aftermarket radio | Radio wiring harness for Chevy compatible with Chevrolet Avalanche Non-Bose 2003-2006, Blazer 2002-2005, Cavalier 2000-2005, Classic 2004-2005, Colorado 2004-2010, Corvette 2005-2010, Express 2003-2007, Express Van 2001-2002, Impala 2000-2005, Malibu 2001-2003, Silverado 2003-2006, Silverado Classic 2007, Ssr 2003-2006, Suburban Non-Bose 2003-2006, Tahoe Non-Bose 2003-2006, Trailblazer Non-Bose 2002-2009, Venture Van 2000-2005, Uplander 2005-2008 | Stereo wiring harness adapter for GMC: Canyon 2004-2010, Envoy Non-Bose 2002-2009, Savana Van 2001-2007, Sierra 2003-2006, Sonoma 2003-2004, Yukon All Non-Bose 2003-2006 | Aftermarket antenna adapter harness for Buick: Century 2004-2005, Buick Rainier 2004-2007, Buick Rendezvous 2002 - 2007; Radio adapter harness for Pontiac: Montana 2000-2006, Sunfire 2000-2005 | Sierra stereo wiring harness kit is basic and will not retain R.A.P., factory warning chimes, factory navigation, factory video, factory amplifier, steering wheel controls, or any other factory features | Note: this silverado antenna adapter and radio wiring connector is not compatible with amplifier system like Bose, Infinity, etc