Theft lock 2005 Cobalt

A nice simple answer, you can't. Think of it this way, the car doesn't know you are the owner, and it is there to stop exactly what you are trying to do. You have two computer ECM and BCM, plus the antitheft module and a number of sensors all trying to stop you. All you have to do is the re-learn procedure. Plan B is an auto electrician or alarm / radio installer or auto locksmith.

30 Minute Re-Learn Procedure

1. Turn ON the ignition, with the engine OFF.
2. Attempt to start the engine, then release the key to ON (vehicle will not start).
3. Observe the SECURITY telltale, after approximately 10 minutes the telltale will turn OFF.
4. Turn OFF the ignition, and wait 5 seconds .

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Nov 11, 2011

2006 Chevy Cobalt: theft..crank..the dash lights..battery light

How do i perform the 2006 Chevy Cobalt anti theft system ...

Vehicle History https://www.vehiclehistory.com > questions > how-do-...
Jul 16, 2020 - To perform a reset of the 2006 Chevy cobalt theft system, turn the ignition key to position and wait for approximately. 10 Minutes and the ...

5 answers · Top answer: To perform a reset of the 2006 Chevy Cobalt theft system, turn the ignition key to position and wait for approximately 10 minutes for the flashing anti-theft ...

How do I reset my 2005 chevy cobalt anti theft system?

Vehicle History https://www.vehiclehistory.com > questions > how-do-...
Apr 9, 2020 - Perhaps the simplest is to disconnect the negative battery terminal, let it sit for 15 to 30 minutes, and then reconnect. However, some anti- ...

8 answers · Top answer: There are a few things You can do to reset the anti-theft system on the 2005 Chevrolet Cobalt. Perhaps the simplest is to disconnect the negative ...

Won't start, theft lock symbol on - Cobalt SS Network

CobaltSS.net https://www.cobaltss.net > forums > wont-start-theft-lo...
Jul 9, 2008 - To reset it, you need to stick the key in, turn it to start, and let the key sit in the ON position for 10 minutes, the light will start to ...

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They are the function of the Body Control Module
Body Control Module (BCM), License Lamps, Marker Lamps

Park/Turn/DRL Signal Lamps, Tail/Stop and Turn Signal Lamps

Chevrolet Cobalt (2005-2010) fuses and relays

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Fuse box diagram - In this article, we consider the first-generation Chevrolet Cobalt, produced from 2004 to 2010. Here you will find fuse box diagrams of ..

Is this the factory radio?

You can reset it with the battery for 30s just remove the negative plug

problem in theft security system it has to be reprogrammed to new key new ignition switch key lock system. dealership fix need diagnostic eqquipment to reprogram new ignition key and ignition switch lock cylinder to the immobilizer control module and ECM.

Is there a computer related code which I must enter via the radio ??? You don't enter anything through the radio !!!!! Having factory service repair info so you can read how the anti-theft system works an a scan tool to pull DTC'S - diagnostic trouble codes is the proper way to diagnose .
The theft deterrent system has been incorporated into the body control module (BCM). The theft deterrent is provided in order to prevent the vehicle operation if the correct key is not used in order to start the vehicle. The ignition key turns the lock cylinder. The cylinder rotation produces an analog voltage code in the Passlock™ sensor. This voltage code is received by the BCM. The BCM compares the voltage code to the previously learned voltage code. If the codes match, a class 2 message is sent from the BCM to the powertrain control module (PCM)/vehicle control module (VCM). The message enables the fuel injectors.
The design of the Passlock™ system is to prevent vehicle theft by disabling the engine unless the ignition lock cylinder rotates properly by engaging the correct ignition key. The system is similar in concept to the PASS-Key® system. However, the Passlock™ system eliminates the need for a key mounted resistor pellet. The components of the Passlock™ system are as follows:
• The ignition lock cylinder
• The ignition switch
• The Passlock™ sensor
• The Body control module (BCM)
• The security telltale
• The vehicle/powertrain control module (VCM/PCM)

Your best bet , take it to a qualified repair shop.

If the light is on it means you have a security concern and will need a scan tool to find out the code.You will need a gm scan tool or one that can read body contol module/theft module data.

Sounds like a bad ignition switch have ur body control module checked for codes if u have a B2960 and or B3033 then replace the ignition switch.

SECURITY
If your vehicle has the remote keyless entry system, this feature allows you to select the method used to arm the vehicle's security system. When SECURITY appears on the display, press the reset button to scroll through the available settings:
* RKE (Remote Keyless Entry) (default): The content theft-deterrent system will arm when the lock button on the remote keyless entry transmitter is pressed or when the power door lock switch is pressed.

* PASSIVE: The content theft-deterrent system will arm itself 60 seconds after the ignition has been turned off and all of the doors have been closed.


Hopd this help (remember comment and rated this).

need to go to a chevy dealer may have a lock module shorting out.or a bad door lock switch.dtc will need to be checked from the body computer and cleared.hope this helps.

check the park lamp relay and the body control module for possible causes. the body control module controls both systems.