I assume you mean via remote. There is a solenoid on the trunk release that when activated by a relay pulls the release. The key when turned mechanically pulls the release.
valet switch in glove box is on
You have to do it from the inside of the trunk.
To remove the inside trunk cover on a 2003 Cadillac DTS, first, open the trunk and locate the clips or screws securing the cover. Use a flathead screwdriver or a socket wrench to carefully pry out or unscrew these fasteners. Once they are removed, gently pull the cover away, being cautious of any attached wiring or components. If necessary, consult the vehicle's service manual for specific instructions related to your model.
Reviews for the 2007 Cadillac DTS can be found on Amazon's website. You can also find reviews on the edmunds website and at the caranddriver websites.
In the trunk against the back seat. There is a plastic cover over it that has to be removed.
where is cylinder number 4 on a 2007 4.6 cadillac
The Battery is under the rear seat in a 2007 Cadillac dts. Remove seat by pulling up the front of the seat till it unlatches. This must be done on both sides. Battery is on passenger side.
The battery is located under the back seat!
Just push inward on the rear edge. It will pop right open.
the radio
The "DTS" as in Cadillac DTS stands for DeVille Touring Sedan. The Cadillac DTS replaced the Cadillac DeVille. The Cadillac DTS was first produced in 2005.
don't even try to cut them you need a special wire harness to change out the radio cause its in the trunk hard to do