How to open the trunk with a dead battery on a 2005 STS?
I'm not sure if you've gotten this question answered or not. If you open the door that goes into the trunk from the back seat there is a release just above the opening. Hard to explain but I hope it helps.
Looking for a Used STS in your area?
CarGurus has 1,052 nationwide STS listings starting at $2,088.
Search Cadillac STS Questions
Cadillac STS Experts