Applications they fit, and I think many more that I didnt list.

Cadillac

1987-1993 Allante
2003-2007 CTS V6
1994-1999 DeVille
1994-1999 DeVille Concourse
2000-2005 DeVille DHS
2000-2005 Deville DTS
2006-2009 DTS
1986-2002 Eldorado
1992-2002 Eldorado ETC
1985-1992 Fleetwood
1986-1991 Seville
1992-2004 Seville SLS
1992-2004 Seville STS
2005-2010 STS

Pontiac

1988-2009 Grand Prix
1988-2005 Bonneville
2001-2005 Aztek
1997-2009 Montana

Buick

1988-2004 Regal
1990-2005 Century
1991-2005 Park Avenue
1986-2005 LeSabre
1986-1999 Riviera

Chevrolet

2000-2009 Impala
1995-2007 Monte Carlo
1990-2001 Lumina
2005-2008 Equinox