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Discussion Starter #1 (Edited by Moderator)
I learned at school that coming from a 2002-2008 GM Master ASE tech (teacher now at UTi) told our class about a simpler way on how to reprogram a key for free. This is what he told us:

1. Have original coded key in ignition switch with new uncoded key in hand.
2. Turn original key to ign/acc switch
3. Take out key
4. Within 5 seconds have new uncoded key into ignition switch
5. Turn to ign/acc switch
6. Wait 10 seconds
7. Key is now coded.

Just wondering if that is anyway true. Sounds legit to me.

Super Moderator
11,821 Posts
Your title is wrong for the thread, but yes partly true if less than 10 keys are already programmed to the car. FOB refers to the remote hanging on the key ring. Edited it for you.

Here is the written procedure out of the GM service manual.
Adding Keys

• To initiate, this procedure requires that a learned master key be available.

• A total of 10 master keys or valet keys may be programmed to a single vehicle.

• This procedure adds keys only. The procedure does not erase previously learned keys.

• The keys to be learned must duplicate the mechanical cut of the current key.

• If more than one valet key is to be learned, immediately precede each valet key with a learned master key.

With a previously learned master key, turn ON the ignition, with the engine OFF.
Turn OFF the ignition and remove the key.
Within 10 seconds insert the key to be learned. Turn ON the ignition with the engine OFF. The vehicle has now learned the new key.
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