2008 cadillac sts cranks but wont start, shows accessory active, any help

What is your question?

when cranking it sometimes sounds like it wants to start but dies out,has been sitting for a year without being started.

What makes this problem better or worse?

at first try it almost starts afterwards just cranks

How long has your 2008 Cadillac STS had this problem?

car has not been driven in 1 year