In response to questions, here is an update on GM remotes having FCC ID ABO1502T. Their are several remotes bearing this FCC ID that GM used in the late 1990s and early 2000s on vehicles across all of its nameplates. The remotes had 2, 3 or 4 buttons. The 2-button remotes (such as GM part 16245102) were used on trucks. Keyfobs with 3 buttons (for example, GM part 16245103) and 4 buttons (including GM part 16245100) were used on sedans.
The most unusual remote in this series is GM part 16245106. It was a 4-button remote used by Cadillac on certain vehicles. What made it unusual is that the fourth button, in lieu of operating a panic feature, served as a locking gas cap release.
Consumers seeking a replacement remote for one of the applications that used an ABO1502T part should note that all of the parts are compatible. Thus, the 4-button part can be used instead of the 2-button or 3-button remote. Of course, the extra buttons will not perform any function.