won't start battery good new oil change 67000 miles had to tow. was running good on 2007 Chevrolet Equinox

Was backing up in yard, shut off engine went back to startup nothing happens. Battery replaced in November, oil changed 2 days ago. had to tow to petboys they put monitor on says possible body control problem. How could a vehicle just quit.

Asked by for the 2007 Chevrolet Equinox
you didnt specify why it wouldnt start does it turn over or is it just dead need to know more for a proper diagnosis