Hi where in the car i can find these key? I've been looking and nothing.. thanks.

 

I'm thinking that is aftermarket. You need to talk to who you bought it from.
Maybe you can try here for a key: https://shop.mcgard.com/

 

I had same issue, no key came with my car. Told the dealer they need to resolve this. They ordered a new set from the same manufacturer of what they normally sell. Then told me to make an appointment and they would forcefully remove the old ones. Turns out when the new set came in the key matched. They just handed me the new set. Done deal.

 

Our cars don't come with lock nuts. So the dealer or previous owner installed them. Check the storage compartment in the driver's side of the trunk.

 

That's where I keep my key.

 

I guess Mike Furman, with Criswell, gave me a set; the key was in the trunk box.

 

If you can't find the key, there is a code number that will allow McGard to make you another one. That number might be anywhere in the car or in the paperwork.

 

My 17 GS came with locking lug nuts just like that. The key was in the glove box.

 

Locking lug nuts are not from the factory. If your car came with it, it was dealer installed, and they charged you at least 3X what it costs.

 

Often, but not always.
We bought our 2009 from an out-of-state dealer and picked it up ourselves. When I brought it in to the local dealer for the first oil change, it came back with a set of the locking nuts installed when I picked it up. The package and the key were in the glove box. No charge. And their oil change prices were reasonable.

 

I always use McGard, which is what the OP has and GM sells with their name on the package. As noted many places selling cheaper. However I also always buy a back-up key. It's necessary to have the paperwork that comes with the locks to be able to order. They have many different shaped puzzle lock/keys.

I keep one in the rear compartment and one in my toolbox!

If the OP can't locate the key you can sacrifice a close fitting 12 point socket and hammer it over the lock. Or find a local tire/wheel thief, that is what they do! Had an experience years ago with a similar Gorilla key that broke and used that approach to remove!