2004 Chevrolet Monte Carlo Security Light and Won’t Start

9 Responses

  1. mike says:

    2001 Chevy Monte Calro will not turn security light on reseting still no go when car siting headlights blink and drains battery is there away to disconet alarm.

  2. Alan says:

    I have the same problem with my 2003 2 lock cylinders later in 3 years..it is still there.

    Security light is on and it a crap shot sometimes whether it will start,,,,,

  3. Pam says:

    I had to pull the dash to change the heater coil in the 03 monte carlo, now it will turn over and not start. Do you suspect that I have engaged the security system to lock? will unpluging and removing dash parts result in security system lock down on my MC? and i have tried all the “kitchen sink” techniques for re setting the system, none of them work.

    • Tom says:

      You can try the 30 minute relearn procedure. If that does not work, then i would think you left something unplugged.

  4. Aisha says:

    I have a 2004 Ss Chevy Monte Carlo dat want start the security light is flashing I turned the key forward for about 15mins and its still doing tha same thing can u tell what I can do about this

  5. Bajram says:

    Yes, the ignition modlue when first failing will cause the engine to die when it warms and start back up after it has a chance to cool (not necessarily cold.If the chack engine light is on, it would be a good idea to have the codes scanned to see if there is a misfire present. If there is a misfire and a loss of coolant, you may have a . You can scan the codes your self at home. Here is how to do it along with code desciptions:

  6. dale says:

    I have an 04 Monte Carlo is, I tried to start it and it won’t crank, and the security light and check engine light is on

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