Cadillac SRX won't start
I have a 2008 Cadillac SRX that won't start. Jumped it a
month ago went and bought a brand-new battery worked
fine for the last month Saturday it was dead so we jumped
it again and it ran into today Monday and when we went
out to start the car to go to work it was that again. nothing
is left on we shut the heat be heated seats the auto lights
are all off we don't use the car starter make sure all the
doors are shot turns over but won't start battery out put is
15.1 I don't know what to do dealership is tell me it's
probably a dead cell in the battery but the battery is not
even a full month all jet help what do I do?