The Snap-on Programmable Sensor Add-on Package, No. TPMS3PRG, for Snap-on TPMS3 can program replacement or duplicate aftermarket tire pressure monitoring sensors, saving time and reducing sensor inventory. This allows users to utilize their existing or new Snap-on TPMS3 tool to program aftermarket TPMS programmable sensors. The TPMS3PRG can replace a sensor with low battery life or one that is non-functioning, as well as create a duplicate set of sensors for customers that change from summer to winter sets of tires. The TPMS3PRG works with all the major aftermarket sensors.