You have to put the truck into learn mode. I'd pick up that 15 dollar tool posted above and have it in the tool box, comes in handy when you rotate the tires too so the position is known.
*Below is the how to from AllData*
Tire Pressure Sensors Learn Enable Methods
Ignition ON, initiate the Tire Pressure Sensors Learn Mode using one of the following procedures:
Using a scan tool, initiate the Tire Pressure Sensors Learn Mode. A double horn chirp will sound indicating the Learn Mode has been enabled. The left front turn signal will also be illuminated.
On vehicles equipped with keyless entry, simultaneously press the keyless entry transmitters lock and unlock buttons until a double horn chirp sounds indicating the Learn Mode has been enabled. The left front turn signal will also be illuminated.
On vehicles not equipped with keyless entry, press and release the driver information center (DIC) INFO button until the TIRE LEARN message appears on the DIC display. Press and hold the SET/RESET button until a double horn chirp sounds indicating the Learn Mode has been enabled. The left front turn signal will also be illuminated.
Starting with the left front tire, active the sensor by holding the antenna of the TPM special tool aimed upward against the tire sidewall close to the wheel rim at the valve stem location. Press and release the Activate button. Ensure that the transmit indicator on the special tool indicates that the sensor activation signal is being transmitted. Wait for a horn chirp. If the horn does not chirp, repeat the sensor activation sequence with the tool. Once the horn chirp has sounded, the sensor information is learned and the turn signal in the next location to be learned will illuminate.
After the horn chirp has sounded and the right front turn signal is illuminated, repeat step 2 for the remaining 3 sensors in the following order:
Right front
Right rear
Left rear
When the left rear sensor has been learned and a double horn chirp has sounded, the learn process is complete and the RCDLR exits the learn mode.
and here is a thread from GM-Truck about the same thing.
https://www.gm-trucks.com/forums/top...earn-required/
I would pick up the tool, or hit up a buddy that might have a TPMS relearn tool and see if they can get what might be in the "new" wheels to train up. Otherwise you'll need to swap em or pick up 4 new ones.