Question about 2002 Chevrolet Monte Carlo

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Changed body control module on 2002 MonteCarlo

Changed the module now all the lights come on but it wont start.Security light turns on in info center.

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Try cleaning the key and ignition switch with alcohol or electric contact cleaner. Try a different key if you have one. And GM's are known to have problems with the ignition cylinder and theft deterant system. A new ignition cylinder costs $280-$300. Sometimes you can turn the key to the run position wait ten minutes and then start it. Some people say you have to turn the cylinder to the off but not lock position before starting after waiting the ten minutes, but my sister didn't have to with her Malibu.

Posted on Feb 07, 2009

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I hate to tell you this, but all of the components you have just change will not do a thing for the anti-theft light. The vehicles security system has been activated, and that is what is not allowing the vehicle to start. The only way to diagnose what is causing this is to have a scan device capable of Body Control Module communication.

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When i start the jeep all the gages go off and the alarm light comes on. the windows wont go down either. Porblem started when i changed the wrecked drivers door. The lock that was in my original door wont...


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That's a tough one.

I wish you luck in fixing it.

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My night time head lights wont come on. Ive changed multipurpose switch and lights still wont come on. Day time lights run in the day just fine, Earlier when my my lights started going out at night. I...


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Body Control Module (BCM) on both counts. Find a shop in your town that specializes in electrical systems to test it. Beware, these can be intermittent problems, so make sure they keep it until the car does what you have observed. Expect to spend about $450 for the replacment. Dealers quoted me between $700 and $1,100 for the same repair. By the way, a new BCM will probably only last you about 12 months.

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