anti theft system ?

2003 CHEVROLET TRAILBLAZER
90,000 MILES
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ALSPAUGH59
  • MEMBER
  • 1 POST
the anti theft system wont allow me to start it i have replaced all the fuses and changed the ignition and it still wont let me start it and the alarm system goes off all the time how can i fix this without it costing me money and a simple way to do it
Jan 14, 2013 at 9:03 PM
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KASEKENNY
  • ✓Experienced Mechanic
  • 18,907 POSTS
This is tough to know for sure until we scan for codes so that we can find out what the issue is. This could be a number of things so until we know what codes are there, we would just be guessing.

The only thing we can try is putting the key in the ignition in the on position for up to 30 minutes. If there are no issues with the system then this will deactivate it.

Here is a guide that will help with this:

https://www.youtube.com/watch?v=Z6pUn73GvN4

Here is a guide that will help with pulling codes:

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Let's run through this and go from there.
Jan 13, 2021 at 9:46 AM
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