Getting my burb back on the road after 2 years. Find only one fob working. Turn the key to run twice while holding door unlock down. The car enters programming mode. Press and hold lock and unlock on all 3 fobs. Each fob causes the car to go through the lock/unlock to show it's been recognised. Turn the key to run and back to exit mode. However only one fob (same one each time) works. Any ideas?

 

Presumably you’ve replaced all the remote key fob batteries?

 

We bought a 2014 Yukon about 2 years ago. It came with one key and fob (Mrs. Cusser uses that).

I went to local Ace Hardware and they made a key for me, and programmed it, no fob. Here's the "drawback" which is no big deal to me: once one unlocks the driver door with that key, the Yukon horn beeps softly for 10 seconds during which the key needs to be inserted into the ignition switch and turned to the "run" position, or the horn/security beeps louder.