Question about 2003 Chevrolet Monte Carlo

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Setting security system after replacing ignition

In a 2003 monte carlo??? Thanks Mike

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Turn car off remove keys for 30 min try it again

Posted on Jul 03, 2009


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My chevy Monte Carlo won't start so I took it to the dealership. They replace the body control module and ignition switich and still the security light comes on while driving. refuse to start if parked...

If the security light is coming on, there should be a trouble code to help diagnose the problem. My Buick had a problem with a connection in the key cylinder. I replaced the cylinder to correct the problem.

Dec 12, 2013 | 2003 Chevrolet Monte Carlo

1 Answer

2003 monte carlo does not start

need to narrow down to electrical or fuel management --when no start is fuel pump working ---has the ignition system been tested or starter when no start

Jul 08, 2017 | 2003 Chevrolet Monte Carlo

1 Answer

Replace ignition in 1996 monte carlo, now it will not turn over

By replacing the ignition you have interrupted an important part of the anti theft security system. Read this link for help and solutions.

Jun 28, 2011 | 1996 Chevrolet Monte Carlo

1 Answer

I have 2003 Monte carlo when its hot outside and sun beating down on it, I turn the key and nothing happens. I have to try several times then it starts.

Next time this happens, check out the dash and see if there is a light on somewhere that says SECURITY. When the anti theft begins to fail, it can disable your starter making the ignition seem like its doing nothing. If you see the security light when this happens then id say 100% that this your problem. This link explains it and gives you some DO IT YOURSELF fix it options.

1995-2005 Monte Carlo

May 15, 2011 | 2003 Chevrolet Monte Carlo

1 Answer

How do i go about putting a 12 volt toggle switch (kill switch) in my 2003 monte carlo

2003 Monte Carlo comes equipped from the factory with an ignition switch and an antitheft system. Why do you want to install a "Kill Switch"?

Jan 23, 2011 | 2003 Chevrolet Monte Carlo

1 Answer

How di I reset my security light on my 2003 monte carlo

1) Put the key in the ignition and turn to the "ON" position. Leave it that way for 10 minutes. After 10 minutes turn the key and take it out. Repeat this process (2) more times (3 times, 30 minutes total) This should reset the PASSKEY system to recognize your key.

May 25, 2010 | 2003 Chevrolet Monte Carlo

1 Answer

Security system will not start

Tis system is a nightmare. I had to go to the dealer. They were threonly shop with the proper tools to access the security system and reset it after an ignition lock change

Mar 11, 2010 | 2003 Chevrolet Monte Carlo

1 Answer

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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Security Light On

The security system (VATS/PassKey) is having problems, it's typical on those cars. You can find a great write-up here: , it was the only thing that saved my Park Avenue.

Sep 12, 2009 | 1999 Chevrolet Monte Carlo

2 Answers

03 Monte Carlo Security Problem...

You described exactly what my 2003 monte carlo i just bought with no warranty is doing! so did you get it fixed yet? if so , let me know how you did id appreciate it...

Apr 06, 2009 | 2003 Chevrolet Monte Carlo

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