Hi all, It's been a while since I've posted, but I've still be lurking around a bit. Last week was a terrible week for my Tahoe, considering the windshield cracked, the left headlight went out, the right tail light went out, and on top of that, my keyless entry & TPMS both stopped working. Windshield and lights are easy fixes, (other than having to take the entire front bumper off to fix the headlight), but I'm concerned about the keyless entry & TPMS. I went to the park last week to run, whenever I initially exited the truck, I locked it with my key fob, no issue, but when I stopped for a water break about 30-45 minutes later, the key fob wouldn't work. I got mad about it but figured that the battery had went dead, even though it's a 3 month old Escalade key fob. So I continued on, and when it came time to leave, I started the truck, only to see my DIC freaking out saying that I needed to Service TPMS. It seems like these two issues are probably related, being that they both happened at the same time. When I got home, I tried both of my spare key fobs to make sure it wasn't just the battery in the remote, but they didn't work either. When I try to "Relearn Remote Key" in the DIC, when I hold the button down, instead of it popping up "Relearning Active" it just blinks once then says "Relearn Remote Key" again... Has anyone else had this issue before, and if so, what's the fix for it? I'm really hoping that someone has some insight here... I read part of a post the other night on it saying that it may be the BCM?