A reader asked for information on GM part 15051014, so here it is:
This is a 3-button key fob remote (see link here). The FCC ID number is MYT3X6898B, and that number does appear on the back of the keyfob. This remote was used by GM on the 2002-09 Chevy Trailblazer, the 2002-09 GMC Envoy, the 2002-04 Oldsmobile Bravada, and the 2004-07 Buick Rainier.
Some vehicles using GM part 15051014 also offered option packages that included seat memory or remote rear window rolldown. The seat memory fobs had GM part numbers 15008008 and 15008009. They are also 3-button remotes and are interchangeable with GM part 15051014. The remote with window rolldown is a 4-button keyfob with the same FCC ID number MYT3X6898B. See it at this link.
This remote is user programmable for all GM applications.
Note: The 3-button remote was also used on the Isuzu Ascender, but that application requires a scan tool for programming.