2003 Pontiac Grand Prix Sedan
Mileage = 104 214
Engine size = 3.1
dash lights = the security light is flashing on and off
codes = have not had it scanned yet
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. Why is my 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:
Mileage = 104 214
Engine size = 3.1
dash lights = the security light is flashing on and off
codes = have not had it scanned yet
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. Why is my 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:
Theft / Security Light
The security system on todays cars and trucks prevents the vehicle from being stolen. There are many
variations of the system going back to the early 1990's.
This warning could be on when the engine is running, indicating a fault has been detected in the system. If left
un repaired, there is a good possibility that the car will eventually not start.
There are several different possibilities for the cause of the warning, depending on the make / model / year of
the vehicle. Anything from a bad ignition cylinder wire, to a bad cylinder to a dad Body Control Module (BCM).
After market (non-factory) alarm and remote start systems can cause havoc with the factory theft system,
causing this warning light, or a no start.
The security system on todays cars and trucks prevents the vehicle from being stolen. There are many
variations of the system going back to the early 1990's.
This warning could be on when the engine is running, indicating a fault has been detected in the system. If left
un repaired, there is a good possibility that the car will eventually not start.
There are several different possibilities for the cause of the warning, depending on the make / model / year of
the vehicle. Anything from a bad ignition cylinder wire, to a bad cylinder to a dad Body Control Module (BCM).
After market (non-factory) alarm and remote start systems can cause havoc with the factory theft system,
causing this warning light, or a no start.
Pontiac Grand Prix Theft relearn procedure.
Sounds like you may have a problem with the ignition switch, or ignition lock
cylinder. These fairly common for this condition. You can try this to relearn the
theft system...
1. Turn the ignition to the ON position, not crank, with the engine off.
2. Wait 10 minutes, or until the theft/security light goes out, or stops flashing.
3. Turn key off, wait 5 seconds.
4. Perform steps 1-3, 3 times for a total of 30 minutes.
5. Turn key off for 10 seconds, then try t start. If this does not work, then the
system will need to be diagnosed further.
cylinder. These fairly common for this condition. You can try this to relearn the
theft system...
1. Turn the ignition to the ON position, not crank, with the engine off.
2. Wait 10 minutes, or until the theft/security light goes out, or stops flashing.
3. Turn key off, wait 5 seconds.
4. Perform steps 1-3, 3 times for a total of 30 minutes.
5. Turn key off for 10 seconds, then try t start. If this does not work, then the
system will need to be diagnosed further.
