Question about 1999 Chevrolet Monte Carlo

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1998 Monte Carlo security light flashes, car won't start. How do I reset?

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The security system (VATS/PassKey) is having problems, it's typical on those cars/years. It's been a nightmare for us. You can find a great write-up here: http://newrockies.ca , it was the only thing that saved my 94 Park Avenue that has the same security system.

Posted on Dec 06, 2010

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1 Answer

96 Monte carlo z34 won't crank over unless I jump


Sounds like a problem with the key switch, probably the security system. You may only have power to the fuel pump when the engine is cranking.
Is the security light on or flashing ?

Jun 29, 2013 | Cars & Trucks

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I PURCHASED A 1999 MONTE CARLO, THE SECURITY LIGHT IS FLASHING AND THE CAR WON'T START


this should be an easy fix, get in your car and turn the key to the on position until all the lights come on and leave it on for 10 minutes and after that turn the key to the off position for 3 seconds and then it should start, this will reset your security system allowing your car to start. hope this helps.

Jan 09, 2011 | 1999 Chevrolet Monte Carlo

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I have a 97 monte carlo that wont start and the security lights blinks and wont go off. i have 2 pairs of ignition keys and both wont work. couldn't be the starter because i tried to jump start it by...


Try and reset it by getting in car make sure every thing is off, close door's turn key to on and way about 10 mins or till light stop's flashing, then turn key to off and start engine.

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Reset security system and flashing lights


put in key in ignition, turn to ON position (do not start) leave in on position for EXACTLY 10 minutes. As SOON as anti-theft light turns off, IMMEDIATELY start the car.

Oct 29, 2009 | 2002 Chevrolet Monte Carlo

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How do i replace a anti-theft relay for a 2003 chevrolet monte carlo?


not sure what you mean this car doesn't have an (antitheft relay) it has a BCM that receives resistance data from ignition switch and when the data matches programming then car will start. if the data is changed or not reading then the car will not start and security light will flash BCM will shut down starter and fuel delivery. if the security light flashes when you attempt to start the car. the security sensor in the ignition switch will need to be replaced and programmed to the BCM. this is very common problem to these cars.

Sep 25, 2009 | 2003 Chevrolet Monte Carlo

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97 Chevy Monte Carlo won't start, security light is on


disconnect battery for 24 hrs so the computer will reset and if that dont work take it to chevy dealer and have them reset it manually

Mar 27, 2009 | 1997 Chevrolet Monte Carlo

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2002 Monte Carlo wont start


sounds like your passlock sensor on the ignition barrel is faulty. you will have to go to the dealer to have it replaced because of the programming after replacement.

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Car wont start. security light on.


I had this same problem with my 2002 Monte. It is a very cheap fix about $100(If you do not got to the dealer $800) The car thinks that you are trying to steal it so you have to turn the key in the on position until the security light goes off and when the light goes off dont try to start it. Turn the key to the off position and then try to start it. It should take about ten minutes. I know its frustrating cuz I've been there.

Aug 02, 2008 | 2007 Chevrolet Monte Carlo

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