1. The car.
2. Keep it.
3. Some of the GM body/security modules would accept up to four fobs.
Before you pull the ignition key (at the end of the programming
sequence), you might try programming the second fob.
After spending $175 for a new one, I'll use the PKE for a while. If I break
another one, I'll use the keys. The only reason I use it regularly is that
I frequently have my hands full with a computer bag, camera bag and whatever
else and not having to dig for the keys is handy.
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