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What does it mean when the security light comes on in a 1995 Monte Carlo?


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2009-05-18 19:42:41
2009-05-18 19:42:41

95 Monte Carlo's are equipped with GM Passkey II. A wire runs from the computer up to the ignition switch and back to the computer (The 2 wires run into the steering column inside an orange shroud. The wire measures resistance from a resistor in the key. If you have a loose connector or if the resistor on the key is worn down... the computer cannot read the correct resistance and thinks the car is being stolen. If the computer cannot read the resistance at startup, it will disable the starter and fuel injectors for three minutes. The easiest fix (although it disables this security feature) is to measure the resistance in your key (the little chip on the part of the key that goes into the ignition) using a multi-meter, then buy a resistor from radio shack of the same reistance; then hook the resistor to the two small wires in the orange shroud underneath the dash going into the steering column (leaving the wires coming out of the steering column dead). This way, the computer always reads the correct resistance. If you're worried about losing your security feature, you can also place a toggle switch on the wire to disconnect the resistor when needed. mine goes off for everything. when my alarm was triped, when my ABS is messed up, when there is anything wrong with my car other then oil, gas or the brake light. for me its the catch 22 light. if you recently got in a fender bender it can be a pinched or severed wire were you were hit. That is why my ABS was inop, after i fixed it the light finally stoped bugging me. hope that helps give you an idea were to look, my owner manual actually had some good info in it for once! Frank

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The security system shuts the whole car down so that it cant be stolen.

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Sometimes you can reset the security light on a Monte Carlo. Open all the doors and then lock them and close them. Next, use the key to unlock the front driver's side door. If this doesn't work, the car should be taken to a mechanic who can diagnose the problem. When the security light goes on, it can mean something in the security system is failing.


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