HI XXXXXXXXXX
IT SOUND LIKE YOU HAVE A THEFT PROBLEM WITH VEHICLE I WOULD HAVE PASLOCK SYSTEM CHECKED
THE PASSLOSCK IS A SENSOR AND CAN GO BAD
I WOULD HAVE IT CHECKED
AND CHECK WIREING TO AUTO START MAKE SURE OF NO SHORTS
ASE Certified Technician
15YEAR WORKING ON AROUND CHEVY {GM CERT TECH}