433 MHz TPMS Tire Pressure Sensors — direct replacement sensors that monitor tire pressure and temperature for all four tires. Designed to provide timely alerts so you can address low pressure, slow leaks, and potential tire damage before they become major problems. Key benefits Realtime pressure and temperature monitoring for four tires improves vehicle handling and helps prevent punctures and tirerelated damage. Early leak detection and timely alerts reduce tire wear, help extend tire life, and support better fuel efficiency. Preprogrammed to match specific vehicle makes and models, so sensor programming is not required; activation is completed using a standard TPMS scan tool. Main features Frequency: 433 MHz for reliable signal transmission. Functions: tire pressure and temperature sensing with perwheel monitoring. Compatibility: Replacement TPMS sensors for Cadillac Escalade, Chevrolet Silverado 1500 2500 3500, and GMC Sierra 1500 2500HD 3500HD for model years 2019, 2020, and 2021. part numbers: 84338125, 84152501, 85110397. Installation: direct replacement of original sensors; sensors arrive preprogrammed for specific make, model, and year. Activation with a scan tool is required to register sensors to the vehicle. Quality control Sampled inspection: a proportion of sensors are inspected onsite to verify product quality and provide greater confidence in reliability. Practical applications Daily commuting: maintain correct tire pressure to improve ride comfort and reduce unexpected roadside stops. Towing and heavy loads: monitor pressure and temperature under increased load to prevent overloadrelated tire failures. Longdistance travel and seasonal driving: detect slow leaks or pressure loss before they affect fuel efficiency and handling on extended trips. Notes for installers No manual sensor programming is required before installation. Use a TPMS scan tool to activate and register the sensors to the vehicle ECU after fitting. Ensure correct placement and torque for valve hardware per vehicle service guidelines. These 433 MHz TPMS sensors offer a straightforward replacement option that restores tire monitoring functions and helps maintain tire condition and vehicle safety for compatible 2019 to 2021 models.