452 Reading pressure range up to 148 psi Designed for Chevrolet Silverado and GMC Sierra Models with RPO (Regular Production Option) Codes PTT (Trailer Tire Pressure Monitor Sensors)or U1D (Advanced Trailering System), these TPM Sensors are synced to the vehicle Infotainment System and notify you when any of your trailer tires are low on pressure. 4 TPMS Trailer Sensors 86803857 84152501 for Chevy Silverado GMC Sierra 2020-25. 1 Monitors trailer tire pressure and informs driver when pressure levels are low. 2 Set of Four (4) Trailer Tire Pressure Monitor Sensors. 3 For Use on Models with RPO Code PTT or U1D. Sensor Stem size standard. Reading pressure range up to 148 psi. Designed for Chevrolet Silverado and GMC Sierra Models with RPO (Regular Production Option) Codes PTT (Trailer Tire Pressure Monitor Sensors)or U1D (Advanced Trailering System), these TPM Sensors are synced to the vehicle Infotainment System and notify you when any of your trailer tires are low on pressure. With this set you will always know the level of air in your trailer tires with this set of Chevrolet Accessories Trailer Tire Pressure Monitor (TPM) Sensors. Made with premium quality materials and components and meet with strict Certificate Standards. All sensor fittings made from aluminum. You will receive 4 sensors in a package same as in pictures above. All sensors are brand new. The functionality and compatibility is unchanged (tire pressure and temperature). Make Model Year Trim. 5.3L, 6.2L Gas. We are dedicated to providing consumers the opportunity to benefit from amazing deals on: NEW, Overstock, Open-Box, and Refurbished products from Big company retailers and manufacturers. 100% genuine and guranteed. Every device is fully tested in great condition, cosmetically 9.8 out of 10 condition. There may be minor cosmetic wear such as minimal light scratches. Join the Airpods revolution with a discount price! If you have any questions, please send a message and ask! Our customer care team provides you with personal, expert-level support for each one of our devices and customers. Your physical address is required. Please allow us have more time to handle your case, and please trust us that we will provide the perfect solution for you. Purchasing from us is completely risk free. We are committed to providing genuine and high quality products to all our customers. 30 DAY return time on EVERYTHING we sell. So we can send return instructions.