I have a 2002 Buick Century Customer that I bought about 20 months ago.
It did not come with a key fob.
It might have had keyless entry when it was new.
Is there a way I can find out if it had this or not?

Thanks!

Post a picture of your RPO sticker(inside glove box)

I looked inside the glove box, but there was no sticker there.

Often the RPO codes are on the spare tire cover under the trunk carpet.

If not there under the rear trunk lid...

My bad, trucks, the stickers are in the glove box. Cars, they are located on top of the spare tire cover(under the carpet in the trunk)

Think you are looking for "AUO" for a code....