why clicking in dash causes locks activate on there own and car not running on 2003 Chevrolet Cavalier

if left over night kills batterie

Asked by for the 2003 Chevrolet Cavalier
3 answers
Possible loose wiring causing a parasitic drain. Probably best to take to a shop to locate the wiring issue.
It's possible one of your door lock switches is failing and sending a false lock command. Have the car checked by a shop.
agree with both poss door lock relay or module issue