Re: 05′ DeVille DTS Factory Stereo Upgrade Factory slot is a double din. To swap out head units is pretty easy when you use the proper modules. I used a Kenwood nav but chose a basic one but they make them with all the goodies you would want. Mine is the 6.1 inch screen, they also make them with the 7 inch screen. The proper harness to hook up a double din radio is the PAC OS-2-32. Doesn’t …
