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I have a 2006 Chevy cobalt that will not start do to security light being on what do I do to fix this problem

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You have to "prove" to the vehicle that you have the keys! So lock the doors using your key, then unlock the driver's door, then get in and start the car using your key, then turn it off, take the key out, lock all the doors and close them. That should reset the security system.

Posted on May 11, 2017

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Posted on Jan 02, 2017

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SOURCE: 2006 chevy cobalt woulnt start lock light is on

Are you using the original key that came with the car? The chip in that key may have gone bad. Try using the spare key that should have come with the purchase of the car. You may also be having battery issues. If all else fails....call the people who really know how to rape you...DUM Dum dummmmm....the dealer

Posted on Dec 31, 2008

  • 76 Answers

SOURCE: how to adjust headlights on 2006 chevy cobalt

There will be adjustment screws located on at least two different spots surrounding each headlamp. By turning these screws you move the angle of the headlamp. Most shops will do this at a very resonable rate, I say this because improper headlamp angle may lead to a ticket, or at least a warning. To say the least, they have to be at specific angles and heights. Good luck.

Posted on Feb 20, 2009

SOURCE: how do i change the car battery for 2006 cobalt?

the battery is located in the trunk under the carpet where the spare tire is located, loosen the 10 mm nuts on the terminals and pull them off, gently pull the vent hose from the battery, loosen the bolt for the battery hold down, usually a 13mm or 15mm, remove battery and reverse the process to install

Posted on Jun 19, 2009

  • 98 Answers

SOURCE: 2006 chevy cobalt - door won't open

Start with the basics. Check the fuses (all of them) with a test light and be sure you have power to each and that they are good. Then be sure that the power lock relay is good by swapping it with another relay in the fuse block. If the fuses are good and the relay is swapped and the locks still aren't functioning, you may have an issue with the BCM. The BCM can be programmed to change the behavior, but if the car has had water damage, or other stress to the BCM (voltage, heat, etc.), it can sometimes damage the BCM and you will need to replace it and reprogram it at a GM dealership.

Posted on Jul 25, 2009

  • 521 Answers

SOURCE: my 2006 chevy cobalt 2.2 liter sputters

Fault with the IAC valve.there maybe a trouble code associated with it also./ Go to your nearby autozone or auto parts retailer and ask them to put a scanner to the car....make note of the codes if any are found. the IAC valve i usually locate don the throttle body and can be removed for inspection and sometimes cleaning using a good throttle body cleaner spray and a pipe cleaner brush.

Posted on Aug 04, 2009

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1 Answer

2005 Chevy Cobalt Security LIght and Won't Start


Have you tried to do a hard reset? Disconnect your battery for 24 hours. And try it again. This will usually fix a lot of computer malfunctions. Good luck.

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I have a 2006 chevy cobalt and the lock lite is on on the display dash and the car wont start .Also the radio and dash functions wont come on. I live in the bahamas and we dont have access to a chevy...


you will need to do a security relearn.
1.turn key to on position and leave on
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3. do this 3 times for 30 minutes then after 30 minutes your 3rd time and after turning the key 3 times the 4th time start the car. it should start right up.

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