have a 99 Bonneville SLE with keyless entry. When I bought it, it only had one remote. I mentioned it to my father in law and he geve me two others that he had as spares for his 02 Lesabre LTD. Now the question, are they compatible? Mine has the following numbers:
GM/UTA 25678792
FCC ID: KOBUT18T
CANADA: 1983 101 393

The new ones have a 1 and 2 on the back'* of them resectively (his Lesabre had memory seats ect)
The numbers on the number 1 are as follows:
GM/LEAR 25695954
FCC ID: KOBLEAR1XT
CANADA: 3521 102 1716

The numbers for number 2 are
GM/LEAR 25695955
FCC ID: KOBLEAR1XT
CANADA: 3521 102 1716

thanks for any info in advance.

I don't believe the 1/2 remotes are compatible. The FCC ID #'* on the back need to match in order for compatibility. However, on Ebay you can pick up the remote you need cheap -- $15 maybe?

--Chris