Good point I assumed you checked your tire pressure all around. There are instructions in owners manual how to reset or you can find it on the forum for your truck. Mine is an 07 so I go to DIC hit relearn and add or let out air until it honks this can be done with a tool as well
Learn procedure is what I used to determine one is totally gone... I thought there was a different "reset" procedure you were talking about.
Full story: bought a 2nd set of wheels exactly like mine from a salvage yard to use for winter tires (better traction with ice tires and keeps my nicer wheels out of the salt). Before dropping off at tire shop to have winter tires installed I tried a relearn with those wheels. 3 of the 4 would "learn" but that 4th one, no matter what order I tried to learn them, simply wouldn't "learn". I came to the conclusion it's either a goner or battery is totally dead (goner).
Additionally, the set of all-season tires I have on now has 2 sensors with weak batteries. On short trips they're fine but longer trips, where they transmit more before getting a break/dormant period they start to have problems. I think these are the original sensors as it's a low miles xl and these tires have a date stamp of 2009 (they're getting replaced soon as well). If they're original I'm sure the other 2 sensors aren't far behind.
Lastly, I did some self education on aftermarket sensors. Many need programmed before they can be learned. Denso makes a direct fit sensor that doesn't need programmed before learning, it looks exactly like the 15114379 that is in my wheels except different color. They're same cost as OEM on rock auto but found on amazon for under $30... bought 8 of them...