Description: Genuine GM Tire Pressure Monitoring System (TPMS) Sensor, part number 20925924. This GM OEM tire pressure monitoring system (TPMS) sensor monitors tire pressure and reports it to the vehicle so you are warned of low tires. Made by General Motors to original equipment standards for correct fit, finish and durability—no guesswork with aftermarket parts. Verify fitment using your VIN or GM part number 20925924 before ordering. Shipped from Gateway Buick GMC, an authorized GM dealer.