We recently received an inquiry requesting a replacement remote transmitter for a 1999 Chevy Blazer. This particular customer resides in the UK. His vehicle required GM part 15732810.
This part was not used on vehicles sold in North America. The replacement remotes for North American vehicles are GM part 15732803 (a 3-button keyfob) and GM part 15732805 (a 4-button keyfob). Both of these keyfobs have FCC ID KOBUT1BT.
We know of another GM remote transmitter used on 1999 Chevy Blazer. It is GM part 15048582 and it was also used on export vehicles. One must be careful buying a remote in one region for vehicles sold in another region because, in many cases, the keyfobs look similar but are not compatible. In particular the transmission frequency may vary to comply with different radio frequency spectrum rules in different countries.