Tampering or replacing ignition that does not match up with your key will cause your security to shut your car down.
It means it works Security alarm
The security light flashes when a programed key is not installed in the ignition, when you insert a programed immobilizer key in the ignition the security light will go out, the light flashes as a theft deterrent
Why is my security light on and will not let my key come out of the ignition. 1999 buick regal
The security light comes on after you changed the keys in the ignition from the off position to the on position as a confirmation that the electrical components in the dash board are working. It is nothing to be concerned about.
on your 2001 Tahoe the change oil light is tripped by a sensor in the main frame computer. my suggestion is to take it to your nearest dealership and have then reset it . this should solve your problem Turn ignition on but don't start, press gas pedal to floor three times. This should do it.
If the security light is flashing you need to change the ignition switch it self. It is likely worn out.
A flashing Security light is indicating that the security system on your car is active.
twist and pull out
I've had this problem where I couldn't start my car and it turns out it was because the security light was on. To fix it: Place the key in the ignition and turn it one rotation (so battery is on) then leave it in the ignition for 10 minutes. Restart car and security light will be off.... also car will start!
turn the ignition off for 3 minutes
When you turn the ignition, Tahoe trys to start, but cuts out. Security light flashes. The security system opens and lock doors and is connected to the horn. How do we get this car to start? We could not reset by holding the lock and unlock buttons at the same time for 7 seconds, nothing happened with the door locks. New battery replaced in remote unit. === Here's what I do that works for me: put the key in and turn it to the accessory position, but don't start the car. Wait about 12 minutes. Start the car - it should work. (Sometimes I put the parking brake on to kill the headlights and prevent unnecessary drain on my battery while the key is in the ignition.)
Write the date and mileage on a small sticker and cover the light with it.