That same remote is also compatible with 1996-99 Buick Lesabres and Park Avenues, Olds 88'*, and probably Buick Rivieras.
Originally Posted by scottydl
(The following for my 1998 SLE... and I did purchase an eBay replacement that works perfectly!)
FCC ID: KOBUT1BT
Canada: 1983 101 393
(P.*. My '99 Aurora that replaced my Bonneville has exactly the same numbers... in fact, I re-programmed one of my salvaged Bonny remotes for my Aurora. Just a helpful tip if you have other GM vehicles; the numbers are universal across several models.)