2014 Tahoe key fob physically works but will not unlock/lock or do anything

[Doubeleive]

just because it sends one signal (tpms activation) doesn't mean it is sending lock or unlock properly. It could be sporadic or not cycling the security key properly or any other number of issue's. he could try removing the fob battery again and cleaning it and try again if it doesn't work the next cheapest option is to buy another fob and have it programmed by a locksmith or dealer, if that fails then move on to more troubleshooting.
my money is on the fob since that was the root cause to begin with.

 

[anoblongbox]

Yeah that's what I was thinking too but was thinking maybe someone else had another suggestion to try first.

Anyways while cleaning and looking over the pcb I noticed there is a slight discoloration on one of the solder points so I'll try and clean that up and see if it works. Clearly the buttons themselves do work but it's not sending (or possibly receiving) anything to unlock the doors. I'm assuming the same module receives the signal since if TPMS stops working the fob will stop working, from reading other people's posts about similar issues.

I'll probably live without the fob if it doesn't work since I don't know anyone with a tech 2, but if there's another way to program on this year for cheap then I'm all ears.

 

[anoblongbox]

Update: I bought a dorman reprogramming kit with 1 fob and figured id try the old one when I did it, now I have 2 fobs that both work. Not sure how on earth the other fob got disabled but at least now I have a spare.