GM used remote transmitters with FCC ID KOBUT1BT on trucks and SUVs for the years 1998, 1999, 2000 and 2001 on a variety of vehicles — including full-size, S10 and Sonoma pick-up trucks and Blazer, Jimmy and Bravada SUVs. The systems in all of these vehicles have on-board programming, meaning a consumer can program the system to accept a new transmitter without special tools.
Unfortunately, GM has discontinued distribution of these remotes, so they may be hard to find. Remotes Unlimited has a limited supply of new and refurbished OE transmitters in stock. However, we also offer an aftermarket replacement key fob that works for vehicles that originally used an OE transmitter with FCC ID KOBUT1BT. Links for these remotes are provided below:
For Chevy and GMC trucks that originally used a 3-button key fob, see RUI part 517-1517 at 3-button remote replacement for GM key fob with FCC ID KOBUT1BT
For Chevy, GMC and Olds SUVs that originally used a 4-button remote, see RUI part 516-1516 at 4-button remote replacement for GM SUV key fob with FCC ID KOBUT1BT
IMPORTANT NOTE: For the 2001 model year, GM trucks and SUVs changed keyless entry systems half-way through the year. If your vehicle was built after February 2001, you probably have a system that used a remote with FCC ID KOBLEAR1XT. Those remotes look like but are not interchangeable with KOBUT1BT transmitters. Call Remotes Unlimited toll-free at 877-719-1900 and choose option 2 to speak with a sales associate if you have any question about which remote you need.