To reprogram the security system on a 2003 Pontiac Montana, first, ensure that you have all keys available. Insert the key into the ignition and turn it to the "On" position without starting the engine. Leave it in this position for approximately 10 minutes; the security light should turn off. Turn the key back to the "Off" position and repeat the process two more times with the same key, then try starting the vehicle. If issues persist, consult a professional or refer to the vehicle's service manual for additional steps.
security system need to be check take the car to the nearest Pontiac car dealer to have it reprogram
How to override the security system
they are located in the exhaust system Where ? how many 02 sensors on a 2003 Pontiac Montana
how do i restate my security system in my 2000 Bonneville
The Pontiac Montana does not come with a factory installed amp in the sound system. The wiring goes directly from the radio to the speakers.
It will probably have to go to the dealer and have the system repaired & then they have to reprogram the security system
How to disengage Pontiac Montana 2002 anti-theft system
The 2003 Pontiac Grand Prix does come with a factory security system installed. If your security system is enabled it should have a "security" light that flashes when the key is turned on.
If you have the "PassLock" Security system on your vehicle, you MUST take it to the dealer to have the ignition changed out. The will have to reprogram the security system to match. If they don't your security may stay engaged which will cut of the fuel.
you will need to call a pontiac dealer and get an activation code, because of the anti-theift system.
You can do it with a scanner. Usually when the security light is flashing it means there is a problem with the passlock system. Dealer item and about $500.00-$700.00 to replace parts & reprogram.
disconnect the battery then reconnect. easiest way to reprogram any car computer..