I have not yet taken the fobs to the dealer for programming, but I have tried to program the transponder keys. They don't work in the 2006 Grand Prix. The Pontiac owner's manual says the keys should be marked PK3, but these keys are not. I ordered PC3 from another supplier. They cost $10 each. I'm hoping for better results with keyless fobs. If the keyless fobs worked I would be somewhat happy with this order.
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