Need help with tpms

Can't get my truck to go into the lean mode for the tpms. It's a 2012. I've tried the remote, the dash, the dic, and with a tech 2. It's been it the stealership and they can't either. Was told the passenger door module had something to do with it but the tech 2 doesn't even see the it. Was also told if that was out the window wouldn't work but it does. I'm just lost. Also the driver side sensors say that their on but show no pressure but the passenger side says they'renot turned on our able to read

Have you tried using aftermarket tpms tool? Some of them use a magnet I think. Go to firestone for a oil change and rotate and then tell them they messed up you tpms lol But for real they normally have a pretty good aftermarket tool just to try something different and see if it responds

for GM usually what works is using a Solus or Modis, with a 315Hz frequency magnet. If not like ^ said go to discount tire firestone or somewhere of that nature shouldnt cost you more than 10$ to relearn.

Thanks but we got it figured out. When they put the the remote start in ended up putting the remote start w/o tpms program in it. Witch worked fine for when I switched rims but when I changed the battery it reset I guess and was looking for them but the program that was in it was saying no tpms. Switched it to remote start with them and all is good now.