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Key Fob Issues

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Old Apr 20, 2007 | 02:42 PM
  #1  
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Default Key Fob Issues

Has anyone had issues with their key fob unprogramming? I put new batteries in both of them but I keep having to re-program. Any help would be greatly appreciated.

Thanks,

Matt
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Old Apr 20, 2007 | 03:08 PM
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Sometimes a bad car battery will cause the fobs to loose their training. Just an FYI
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Old Apr 20, 2007 | 05:24 PM
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same thing here with mine changed the batt. in one and now none work, i use a red top batt. in car this thing is less then a year old and i can let the car sit for 2 weeks and get in it and it will start right up so i don't think it is the car batt. i'm stumped?
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Old Apr 20, 2007 | 07:11 PM
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i assume you resynced the fobs after the battery change? probably a stupid question eh? did it set any codes by any chance?
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Old Apr 20, 2007 | 10:15 PM
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If you have already tried the resync and new batteries/cleaned contacts and the fob(s) lose their memory, you need a NEW FOB.

Not a used one from ebay.
NEW FOB
NEW FOB
NEW FOB
NEW FOB
NEW FOB
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Old Apr 21, 2007 | 12:10 AM
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may be a stupid question, but how do you resync the keyfob? i have recently changed the battery in the car and the fob no longer worked, so i tried changing the battery in the fob itself, but nothing happened. i am guessing that the keyfob just needs to be synced with the alarm again.

thanks
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Old Apr 21, 2007 | 04:07 AM
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Resynching is simple. Press the lock and unlock buttons simultaneously and hold. In about 15 seconds, the horn will honk and the fob is synched. If this doesn't work, you need to reprogram the FOBs and that is a more elaborate but not difficult procedure.
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Old Apr 21, 2007 | 08:38 AM
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Mine did this about a year ago. Ended up getting a new fob and it has worked fine since.
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Old Apr 26, 2007 | 07:29 AM
  #9  
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From: capitol heights maryland
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Originally Posted by gpracer1
If you have already tried the resync and new batteries/cleaned contacts and the fob(s) lose their memory, you need a NEW FOB.

Not a used one from ebay.
NEW FOB
NEW FOB
NEW FOB
NEW FOB
NEW FOB
one fob is bearly used is with the spare key if one goes bad will the other not work?, both of mine are doing the same thing car is showing no codes, is there someone here selling new one ?.
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Old Apr 26, 2007 | 08:09 AM
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I have the same problem. I just received a new FOB yesterday (it is the correct GM part number and came in a GM bag etc.). I tried to program the new FOB and the car (98) wouldn't acknowledge it. I tried programming my old one. The car would acknowledge it with a beep and it would lock and unlock the doors. But, this morning the old FOB again will not work, which is why I ordered the new one. I checked the voltage of the watch batteries in both FOBs and they both show approx. 3 vdc. My car battery also seems to be good. I drive the car regularly it starts quickly and everything else seems to work. I have not checked the codes lately. I thought I would do that tonight.

I would appreciate any advice.
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Old Apr 26, 2007 | 08:44 AM
  #11  
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Originally Posted by scienceguy2
I have the same problem. I just received a new FOB yesterday (it is the correct GM part number and came in a GM bag etc.). I tried to program the new FOB and the car (98) wouldn't acknowledge it. I tried programming my old one. The car would acknowledge it with a beep and it would lock and unlock the doors. But, this morning the old FOB again will not work, which is why I ordered the new one. I checked the voltage of the watch batteries in both FOBs and they both show approx. 3 vdc. My car battery also seems to be good. I drive the car regularly it starts quickly and everything else seems to work. I have not checked the codes lately. I thought I would do that tonight.

I would appreciate any advice.
Did you try to reprogram it or resync it?
If the new fob is "new", check the battery or put a known good battery in it and try again to REPROGRAM through the DIC in options. As long as it is the correct part number and has a good battery and you reprogram through the DIC, it should work.
You cant however resync a fob that has never been programmed.
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Old Apr 26, 2007 | 02:02 PM
  #12  
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i have the same problem with my FOB I resync it and it stops working I need to order a new one
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Old Apr 27, 2007 | 12:16 PM
  #13  
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From: capitol heights maryland
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Originally Posted by gpracer1
Did you try to reprogram it or resync it?
If the new fob is "new", check the battery or put a known good battery in it and try again to REPROGRAM through the DIC in options. As long as it is the correct part number and has a good battery and you reprogram through the DIC, it should work.
You cant however resync a fob that has never been programmed.
when you reprogram through the dic to you do both ?
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Old Apr 27, 2007 | 03:15 PM
  #14  
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You only need to program it through the dic and then it should work. No need to resync unless you disconnect the car battery or something.
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Old Apr 27, 2007 | 07:06 PM
  #15  
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Default

Originally Posted by gpracer1
If you have already tried the resync and new batteries/cleaned contacts and the fob(s) lose their memory, you need a NEW FOB.

Not a used one from ebay.
NEW FOB
NEW FOB
NEW FOB
NEW FOB
NEW FOB
I need to buy a new one myself as I've went through a numerous amount of batteries, resyncing them, cleaning the insides and now it just doesn't work at all. Although I have heard plenty of CF members purchasing the ebay ones and having success with them.
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