1991 Bonneville Remote Programming

Hey all. I was just wondering if anyone out there could tell me how to, or where to find information on how to program the Keyless Remote for a 1991 Bonneville SSE.
I am sure the car came with the Keyless Entry system, but it did not come with any remotes. I heard I can get ahold of any 91 Pontiac remote, and program the car to use it (is this true?).
Thank you all for your help.

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