Congrats!
Lots of nice goodies on that truck.
I also think the $50 entry in the option list is for sensors that were ordered with that truck.
Might be i glovebox, console or one of the rear seatback storage spots.
Did you find the 'funnel' that is needed to use a portable fuel can to add fuel using the 'capless' system?
Trailer tire pressure module is standard on 2024 ZR2, LTZ and HC as part of the trailering app.
(optional on 1LT version of LT, RST and LT Trailboss)
UET In-Vehicle Trailering App, System, includes checklist, trailer maintenance reminders, trailer security alerts, trailer mileage, tow/haul reminder, trailer electrical diagnostics and Trailer Tire Pressure Monitor System module
Trailer tire pressure sensors are always optional (and much cheaper if included in a factory order rather than purchases thru accessories.
PTT Trailer Tire Pressure Monitor Sensors, includes set of 4 sensors. Sensor functionality requires (UET) Trailering App to be ordered with the vehicle and installed by the factory. Sensors will be shipped loose with the truck and will need to be installed on trailer by customer. System is capable of monitoring up to 6 wheels. Additional or replacement sensors are available through GM Accessories.
Lots of people by LTZ but never tow, or tow but can't be bothered to install the sensors.