Car not starting, anti-theft security system activated

2005 PONTIAC GRAND PRIX
120,000 MILES • 3.8L • V6 • 2WD • AUTOMATIC
Avatar
JEFFREY T. FRYE
  • MEMBER
  • 1 POST
car wouldn't start . i replaced key lock box and ignition switch but now when i try to start it it says starter disengaged due to anti-theft security system. I've looked up all kinds of different ways on line to reset the security system and nothing has worked. Does it have to be reset at a dealer?
Mar 21, 2021 at 11:32 AM
Advertisement
Avatar
STRAILER
  • ✓ASE Certified Mechanic
  • 54,832 POSTS
  • ASE Certified Mechanic
Lets reboot the system by holding the negative battery cable to the positive terminal for 5 minuets. this guide can help us fix it:

https://www.2carpros.com/articles/how-to-reset-a-security-system


Please run down this guide and report back.
Mar 25, 2021 at 10:07 AM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.