Yes, if the car is turned over and at 11.5 that is very low, should be 13 or higher. 11.5 before starting is probably right though.
Bad alternator? A fully charged battery should read approx. 12.8 without engine running With engine running should read approx. 13.8-14.2 volts
Under the rear seat
Remove rear seat and remove battery
14.2
Under the rear seat
under the hood passenger side
I think it's under the rear seat!
Flickering lights, on a Cadillac STS, is usually a sign of a loose wire. When all of the lights flicker, it is an indication of a loose battery ground cable.
Cadillac STS was created in 2005.
No, ..
under the back seat you frekin idiot read the book
CADILLAC STS is totally better