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Anti-theft is on how do I reset it?

Tiny
YVETTEWARD
  • MEMBER
  • 2018 CHEVROLET IMPALA
  • AUTOMATIC
  • 10,000 MILES
The anti-theft is on It will not crank or light up.
Tuesday, November 26th, 2019 AT 8:11 AM

33 Replies

Tiny
DANNY L
  • MECHANIC
  • 5,648 POSTS
Hello, I'm Danny.

Lets try an anti-theft system reset first. Here is a tutorial showing what to do:

https://www.2carpros.com/articles/how-to-reset-a-security-system

Scroll the page to find Chevrolet.Hope this helps and thanks for using 2CarPros.
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Tuesday, November 26th, 2019 AT 2:08 PM
Tiny
JASONTOLBERT
  • MEMBER
  • 6 POSTS
  • 2007 CHEVROLET IMPALA
  • 150,000 MILES
I have a 2007 chevy Impala. There is a symbol that pops up whenever I try to start the car. Ithe symbol looks likes a car with a lock on it. The car won't start but it does try to start. I read something that says it may be something with the cars security system. I really need to know what that means. I just spent 6000.00 on it yesterday.
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
As I stated, do you have another key? It is a security issue and most common is the key wearing out

roy
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
JASONTOLBERT
  • MEMBER
  • 6 POSTS
There is not another key. I was only given on key and one key fob. What do you suggest I do? What exactly does that symbol mean?
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
It is a security issue. It does not see the password and will not let it run

Roy
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
JASONTOLBERT
  • MEMBER
  • 6 POSTS
There is no keypad to input any passwords. It does on like a keypad use to be there. How would this problem be corrected?
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Most likely will need a new ingnition swithc/tumbler assembly and the security system would have to be re set.

Roy
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
JASONTOLBERT
  • MEMBER
  • 6 POSTS
Outs there a particular person or company that you recommend that ours reasonably priced?
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
I reccomend dealer as they will be the ones you must secure the parts and they are the ones who will unlock the security.

Roy
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
JASONTOLBERT
  • MEMBER
  • 6 POSTS
So theres no one else you has the ability to unlock the security? How much does a job like this cost
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
DJCH2007
  • MEMBER
  • 1 POST
  • 2007 CHEVROLET IMPALA
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 54,000 MILES
I have a 2007 Chevy Impala LS. I recently have been having problems with the keyless entry. The remote will not work when I want to unlock the car. After I use the key to get in the car the and physically open the door the remote will work. When I shut the door and get out of the car I am able to use the remote. After a couple of minutes the remote will not work. I have tried two different remotes and I have the same problem. Any help would be great.
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
BRIAN 1
  • MECHANIC
  • 1,030 POSTS
Replace the remote control door lock reciever, Some customers may comment about one or more of the following conditions:

"Â The remote keyless entry (RKE) transmitters will not program, function and/or the RKE transmitter low battery message is displayed.

"Â The Service Tire Monitor System message is displayed.

"Â The new RKE transmitter cannot be programmed.

"Â The remote keyless entry (RKE) and/or remote vehicle start (RVS) transmitter has poor range.

Cause
Any of these concerns may be caused by an internal fault with the transmitters and/or the Remote Control Door Lock Receiver (RCDLR) software/hardware. Replace the RCDLR module and the RCDLR antenna. Reprogram the RCDLR with the latest software update. You will get 2 new remotes also. Post back with what you find.
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
DPOLKING
  • MEMBER
  • 1 POST
My dealership wanted over $900 to replace and reprogram the RCDLR module and two new keyfobs. Does this sound anywhere near reasonable?
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
JON PETTITT
  • MEMBER
  • 1 POST
  • 2007 CHEVROLET IMPALA
  • 3.9L
  • V6
  • 2WD
  • AUTOMATIC
  • 132,000 MILES
How do I tell if my car is in security mode
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
94 TRANSAM
  • MECHANIC
  • 680 POSTS
When you turn your key on the computer will run a light check on the dash? When all those lights go out one of them will say security and that light will either stay on or flash if it is in security lock down?

If it is in lock down here is a guide to reset it:

https://www.2carpros.com/articles/how-to-reset-a-security-system

Rich
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
SHANNAANN
  • MEMBER
  • 1 POST
  • 2007 CHEVROLET IMPALA
  • 3.9L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES
I replaced the battery. Everything works except for it wont start. I can't hear the fuel injection.
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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
ASEMASTER6371
  • MECHANIC
  • 52,797 POSTS
Good evening,

You can try resetting the security. I attached a guide for you to try that procedure.

https://www.2carpros.com/articles/how-to-reset-a-security-system

I will not give you the instructions for disabling a safety feature. Sorry, but that is there for security reasons and I am not comfortable giving that information.

https://www.2carpros.com/articles/car-cranks-but-wont-start

Roy

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Friday, March 12th, 2021 AT 9:01 AM (Merged)
Tiny
DUNNMONEY
  • MEMBER
  • 8 POSTS
  • 2007 CHEVROLET IMPALA
  • 3.5L
  • V6
  • 2WD
  • AUTOMATIC
  • 225,553 MILES
Replaced countless parts including battery starter and anti theft immobilizer module. Taken it to several mechanics. No success. One night I was able to do the 10 minute set of 3 thing and get the light to turn off each time. But my battery drained right before the third try. Replaced it with a brand new battery only for it not to work anymore. Very frustrating as I lost my job over this issue and soon my house. I am to the point I can’t afford anymore parts or work done to it. Although everything runs perfect other than the security won’t let me turn it on. Please help!
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Friday, March 12th, 2021 AT 9:02 AM (Merged)
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,747 POSTS
Hi,

Is the security light staying on now? What happens if you allow the key to stay on for about 10 minutes. Will the light go out? I noted you are a mechanic. Do you have a scan tool that can scan the can bus system?

Let me know.
Joe
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Friday, March 12th, 2021 AT 9:02 AM (Merged)
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
When this indicator is on there are normally codes that go along with it so let's start there.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Once we know the code we can take the next step but i would try and put the key in the ignition and let is sit with it in the on position for about 30 minutes and just see if the light turns off. If not, then we need the codes and go from there. Thanks
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Friday, March 12th, 2021 AT 9:02 AM (Merged)

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