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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15181
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I have an 03 Chevrolet I was changing the radio all over the

Customer Question

I have an 03 Chevrolet Monte Carlo I was changing the radio all over the weekend and the alarm activated it never has done that before and I need to know how to disarm the alarm without having to go to the dealership I don't know what made it activate by me unplugging the factory stereo but I don't have an MLB team and I just need to know how to disarm it if they're a way? I've already paid my $15
Submitted: 11 months ago.
Category: Chevy
Expert:  Jerry Newton replied 11 months ago.

What alarm activation are you talking about? Is the horn honking or what?

Customer: replied 11 months ago.

I have already paid just answer $30 and still have not gotten an answer

Expert:  Jerry Newton replied 11 months ago.

I asked a question, I was trying to get information from you. What alarm is activating, is the horn honking?

Customer: replied 11 months ago.

Yes sir the horn is honking and the lights are flashing

Expert:  Jerry Newton replied 11 months ago.

OK. The radio is not part of this equation, at least not according to the way it was designed from the factory.

Do you have key fob, and if you do, does the horn stop honking if you press the buttons on the remote? What about putting the key in the door lock and unlocking it with a key, does that make the alarm stop?

Customer: replied 11 months ago.

No sir I do not have the fob and I tried the key in the door and in the trunk and the alarm still does not stop

Expert:  Jerry Newton replied 11 months ago.

If you put the key in the ignition and turn it on, does it stop then?

Customer: replied 11 months ago.

No sir the light's still Flash and the car won't start

Expert:  Jerry Newton replied 11 months ago.

If it's a factory alarm (and there is no aftermarket add on alarm present here), the alarm should stop sounding when you

  • Unlock either of the front doors using a key
  • Put the key in the ignition and turn it ON
  • Hit the unlock button on the key fob.

If none of these things silences the alarm, then there is either a major malfunction of the body control module, or there is an aftermarket add on alarm that's been installed here (this is what I suspect).