Vehicle make/model = 2003 pontiac Grand Prix Sedan
Mileage = 104 214
Engine size = 3.1
dash lights = the security is flashing on and off  all the time
codes = have not had it scanned yet
work done prior = None
work done to repair = None
tech = JK
question = I started my car Thursday morning to take the kids to school
and it ran perfectly fine. I dropped the kids off at school and came
straight home. At 2 in the afternoon I went to start my car and it ran
for 3 seconds and shut off. I tried a couple times and the same thing
happened. On the dash the security is flashing and I have no clue why.
The closest GM shop to me is 2 hours away or any shop for that matter. I
have no clue what is going on. Can you please help me.





JK:
Sounds like you may have a problem with the ignition switch, or ignition lock cylinder.
These failry common for this condition. You can try this to relearn the theft system...
1. Try to start, then release key to the ON position.
2.  Wait 10 minutes, or until the theft/security light goes out, or stops flashing.
3. Turn key off, wait 5 seconds.
4. Turn key ON position (not crank/start).
5. Perform steps 2-4 3 times for a total of 30 minutes.
6. Turn key off for 10 seconds, then try to start. If this does not work, then the system will
need to be diagnosed further.
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