The security, antitheft or lock picture/icon is a visual indication that something in the car's antitheft system is failing. In most GM cars and trucks there is a hidden system that most people are unaware even exists. From the moment you put your key in the ignition, there begins a constant line of communication between your key's security chip or transponder, to the ignition's lock cylinder, and then to the car's TDM (Theft Deterrent Module). These 3 parts are in CONSTANT communication. If the key is in the ignition, then these parts are sending signals to each other. The security light illuminates when that signal gets broken, even just for a second. When the signal breaks, the car misinterprets this as an attempt at theft and goes into antitheft mode. The car thinks its being stolen or hotwired because it is not getting that signal from YOUR specific key. This is why the security light turns on and shuts down your vehicle. This link explains it pretty well.
http://www.diy-gm-security.com/
SOURCE: Anti-theft
if the vehicle starts then stops and the anti-theft light is flahing you may need to re-set the pass-key system to do this you will need to atempt to start the vehicle and when it stalls leave the key in that position and watch the anti-theft light. it should flash on and off for about 5 to 10 minutes. when it stops flahing turn the ignition to off then try to restart your vehicle
SOURCE: Code P1632
These cars had a tendency to "lose" the password for the theft deterrent system. Your body control module doesnt understand your key, therefore tells your pcm to discountinue fuel supply. To reprogram the system, start the engine and let it stall. Leave the key in the run position. The theft light should flash for 10 minutes. When the light stops flashing, Turn the ignition off for 10 seconds. Turn the ignition back to the run position. This procedure tells the BCM that on the next ignition cycle, to accept the new password. Now, it should start. If not, it may require the clearing of the code, and possibly the reprogramming of the PCM, which needs to be done with a dealer scan tool or equivilant.
SOURCE: 1996 Pontiac Grand AM V6 Anti-Theft Activated
this is easy fix i had same thing happen when you start your car and it dies don't touch your key for no less than 11 min then turn it to off for no less than 30 sec the book says you might have to repeat this 4 times it worked the first time for me
SOURCE: anti theft lock on pontiac grand am need code!!
on most hondas you have to pull the radio and get the code of the back then call the dealer, however I am pretty sure on that car you just write down the vin number and call the dealer I emphasize on call so they dont charge you
SOURCE: How do I reset the anti-theft system on my 2000
disconnect the negative battery cable for about three minutes, replace, put key in ignition and turn it on, DO NOT START CAR, turn it off, remove key, reinsert key and start car
882 views
Usually answered in minutes!
×