OEM Transponder Key Fits Cadillac DTS with Do It Yourself Programming Instruction Guide It Fits 2006 2007 2008 2009 2010 2011 Cadillac DTS-It Also Fits 2008 2009 2010 2011 2012 2013 Cadillac CTS You can take this key with your working key to a hardware store or a locksmith place to get it cut, and once the new key is properly cut, you can program the new key yourself.