How can you turn off or reset anti-theft alarm in daughter's 1998 Pontiac Firebird because it activated somehow and now the car won't start?

Car Won't Start Because of Anti-Theft System That Uses ...

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Car Won't Start and Security Light is On on Pontiac Firebird. Problems with the anti-theft systems using the raised-chip key can prevent the car from starting.

Security light was on and car won't start - CarGurus

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CarGurusJul 24, 2007 - Check to see if your key chip isnt worn out(small silver thing on top part... My 1994 pontic firebird won't start and I no everything works great on ...

Pontiac Firebird Questions - security light - CarGurus

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CarGurusFeb 5, 2009 - Hi I've recently bought a pontiac firebird the car doesn't have keys as previous owner ... Security light was on and car won't start 3 answers.

91 Pontiac Firebird won't start (Pontiac Firebird)

answers.edmunds.com > Edmunds Answers

Jun 18, 2008 - My '91 Pontiac Trans AM GTA will not start. When I turn the key, the engine does nothing, as if the battery were dead or the clutch pedal wasn't ...

have to take to dealer

Sounds like you activated the anti-theft alarm somehow.
I would check the owners manual on how to disarm it.

If code 53 involves the PASS system for your car, the chip in the key has failed, or the sensor in the lock cylinder, or the control module.
The anti-theft system disables the starter and the fuel injectors. You could bypass those circuits to get the car started.

Hello Jaclyn...Look under the dash area for a button or, a toggle (valet)
switch. When you locate it, turn on the ignition key, press and hold in the button (little spring loaded micro button, red or black possibly)
until the alarm chirps 1 time. This should over ride the system, and only the keyless entry part, if installed, would still be operating....The LED light in the dash should also go on solid....At this point. the alarm would have reset.
If this had a starter kill relay installed it would now be opened, and the engine would turn over when tried.

You would repeat these steps to go back to user mode to see if this was corrected...i hope this information is helpful...Happy Holidays.

reset alarm 1998 pathfinder

wow have the security alarm removed they activated the the anti theft

Put the key in the driver door lock (or the trunk lock if you don't trust the driver's door- quite often on a vehicle of this age the wires break in the door and it won't electrically de-activate the alarm due to the broken wires)
Disconnect the battery.
Turn the key to the unlock position (toward the front of the car if using the driver or passenger doors) and release it- it will go back to centered, but will retain slack in the forward direction
Then reconnect the battery. You may get one beep out of the alarm horn. If it beeps continually, turn the key to unlock again.
As long as the alarm is de-activated it will not prevent the car from starting. If you are still having a problem it is not alarm related.

Good luck and keep me posted, be glad to help

I'm assuming its an original alarm or system that came from factory or dealer. When the light blinks is because the alarm is activated. Look underneath the radio the alarm brain might be there. There will be a label on it saying alarm or security system etc. Disconnect the harness to it and try operating your vehicle.