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Discussion Starter #1
Hello all! It's been a while since I've been here but I just bought a 2014 Chevy Impala Limited LT last Friday since trading in my 2011 Chevy Malibu. So far I'm loving the new ride and glad I switched back, at least sort of. :D

So the problem is that when I bought the car, it only came with one key. I ALWAYS have a backup available so this is an issue. I ordered two new keyfobs and was able to program them with my Tech2 clone with no problems. I also got two new keys cut, specifically ILCO PT04-PT5 keys. But trying to program them just brings up the Service Theft System.

So far I've tried the standard use the master key and wait until the security light turns off, then shut it off, pull the key out and put the key to be programmed in as fast as possible, and turn it to the ON position. Nothing, just brings up the message no matter how long I wait. Both keys do this.

I've also tried the one tutorial I found on YouTube to do the 10 minute thing 3 times. All times the security light turned off but the keys were not programmed as they still say Service Theft System when you try doing anything with them. Again, both keys do this.

I found a website that mentioned an ILCO clone tool. Do I have to use this instead? Should I bring them back to the hardware store since they weren't able to successfully program them. (She didn't really know what she was doing, so I thought I would be able to get it to work when I got them home). I had a key made at this same hardware store a few years ago for my Malibu and had no problems with it, they got it programmed just fine.

Any ideas?
 

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Did you follow the key programming instructions in the the owners manual? I've successfully done 6-8 circle-plus keys on Limiteds this way.
 

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Discussion Starter #3
Did you follow the key programming instructions in the the owners manual? I've successfully done 6-8 circle-plus keys on Limiteds this way.
Hi sheila! I believe I followed the directions to a T. However, there's one thing it's not specifically clear on.

owners manual said:
To program a new key:
1. Insert the original, already programmed key in the ignition and turn to the key to the ON/RUN position.
2. Turn the key to LOCK/OFF, and remove the key.
3. Insert the new key to be programmed and turn it to the ON/RUN position within five seconds.The security light will turn off once the key has been programmed.
4. Repeat Steps 1–3 if additional keys are to be programmed.
However, on step 1, it doesn't mention whether you should turn it to the on/run position and shut it off immediately, or if you should wait for the security light to go off first and then turn it back. I've been waiting for the security light to go off first, then I turn the key back and quickly take that key out and put in the key to be programmed and turn it to the on/run position and I'm still met with the service theft system error.
 

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Iirc, I just turned the original key to on/run for a sec. or 2 and removed. The key(s) you're programming must remain in the on/run position 'til the security light extinguishes. Can't remember if there's a chime involved or not.
 

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Discussion Starter #5
Iirc, I just turned the original key to on/run for a sec. or 2 and removed. The key(s) you're programming must remain in the on/run position 'til the security light extinguishes. Can't remember if there's a chime involved or not.
Thanks for the tip. Unfortunately, I didn't get it to work doing this either. I haven't had a chance but I can make a video of me trying this out. The light just doesn't go out when I try programming the key. It just comes up with service theft system and you can sit and sit until the cows come home but that security light isn't going away.
 

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Discussion Starter #7
Are those the correct chipped keys? Circle plus at the top of the shank?
I think you're onto something! It's a transponder key....but I don't think it's the correct one, regardless that it fits.

This is what was cut for me: https://www.internationalkeysupply.com/products/ilco-pt04-pt5-b107-pt5-cloning-transponder-key

And it looks like this is what I need: https://www.internationalkeysupply.com/products/ilco-b111-pt-circle-key-gm-transponder-key

So I think I'll end up taking it back to the hardware store and seeing if I can get the right keys made!
 

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Discussion Starter #8
Just following up on this thread. I returned the wrong transponder keys and got the B111-PT keys cut. They work just fine!

So a word to anyone who needs to get copies of their keys, you need the B111-PT model. Even if the other key looks like it'll work, it won't. You will not be able to program it.
 
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