It would depend on the condition of the battery and if the battery charger has a jump start mode.
There are a couple of ways to charge a battery in a 2005 DeVille. You can use jumper cables with the use of another battery. You can also use a portable battery charger.
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.
2005 Cadillac deville
It is located under the rear seat. The seat is easily removed by lifting sharply on the lower front lip of the seat.
Use an axe
By the oil filter
Use an axe
I don't know much about cars but a Google search came up with these,http:/wwwzperiodzpartstrainzperiodzcom/ShopByVehicle/CADILLAC/DEVILLEhttp://www.parts.com/cadillac/1992-cadillac-deville-parts.cfmOr ask this forum,http://www.cadillacforums.com/forums/cadillac-deville-1985-2005-including-1985/185903-92-deville-starter.html
10mm wrench and very small hands
Behind the Left Rear Wing Panel
Jagcat71 Hey i pick up a GM Cadillac Deville(1994 thru 2005)Cadillac sSeville(1992 thru 2004) Haynes Repair Manual at AutoZone auto parts store for $17.00 dollars. Manual#38032
In the trunk, under the carpet.