Replacement for Chevy: Silverado 1500 1999-2007, Silverado 2500 1999-2007, Silverado 3500 2001-2007, Astro 1996-2005, Avalanche 2002-2006, Beretta 1991-1996, Blazer 1995-1997, 2001-2003, 2005, Camaro 1993-2002, Caprice 1994-1996, Corsica 1991-1996, Express 1996-2007, Impala 1994-1996, 2000-2005, Lumina 1990-2001, Malibu 1997-2004, Monte Carlo 1995-2005, S-10 Blazer 1994, S-10 Pickup 1994-2003, Suburban 1995-2006, Tahoe 1995-2006, Trailblazer 2002-2009, Venture 1997-2005 | 6-1/2 inch speaker adapter with wiring harness compatible with GMC Sierra Classic 2007, Sierra 1995--2006, Savana 2003-2007, Sonoma 1998-2004, S-15/Sonoma 1994-1997, Safari Mini Van 1996-2005, Suburban 1995-1999; HHR 2006-2011, Yukon / Yukon XL 2003-2006, Yukon Denali 1995-2006, Yukon XL2001-2002, Canyon 2004-2010, Denali 2003-2003, Envoy 2002-2008, Envoy 1998-2001, Jimmy/Envoy 1998-2001, Jimmy 1995-1997 | Door speaker adapter spacer fits for Buick: Century 1997-2005, Le Sabre 1995-2000, Park Avenue 1995-2005, Rainier 2004-2007, Regal 1984-2004, Rendezvous 2002-2007, Riviera 1996-1999, Roadmaster 1995-1996, Skylark 1987-1998; Fit Cadillac: Deville 1988-1995, Eldorado 1996-2002, Escalade 1999-2000, 2002-2006, Fleetwood 1990-1996, Seville 1992-1995 | 6.5 inch door speaker adapter is easy and quick to install; Plug and play, No extra cutting or splicing any factory wiring harness required; The professional copper core maintains good conductivity to ensure safety use | 6.5 inch speaker spacer is made of good quality ABS materials; Appropriate thickness, anti-cracker to reduce vibration that keep the best sound effects; Adapter is line up that fit into original slots