Hi all,
Sorry if this is a repost (I have read most for this issue). My Blazer does not start, the security light is not blinking it is stuck on, even after the key is out of the ignition it will stay on for 20 minutes after. I changed the ignition switch hoping this would resolve the issue but it didn't The passlock reset did not work after trying 3 or 4 times (the entire procedure). I had it start 2 - 3 days ago and ran it for 10 minutes or so but now nothing but a brief start up and it quits.
I'm lost at this point, suggestions please!

 

Ignition wiring harness? Here are a few links with some tips and a link on how to by pass perminatly if needed.

I own a 2007 gmc - FixYa

Get Around GM's Factory Passlock Systems Here!

 

Im having issues with my 2003 jimmy i changed the stereo out and not security light is on and wont go away