Precise ReplacementA true COMPLETE key, including chip, battery, internal electronics and READY to be programmed.Key Fob Compatibility Replacement smart keyless entry key fob fit for 2019 2020 GMC Sierra 1500 2500 3500 key fob, 2019 2020 Chevy Silverado 1500 2500 3500 remote key fob replacement. FCC ID: HYQ1EA Part Numbers: 13529632 13591396 13508398 Frequency:433MHZAbout Programming Self-Programming Instructions is not Available. We recommend you to go to a professional locksmith for for programming. And the uncut blank key needs to be cut by local locksmith.Same as OEM All functions are the same as the original keys with strong signal, made with durable materials and professional craftsmanship, each key has passed strict quality inspection. Please check the compatibility carefully before purchasing.NotePls check the compatibility before you order it, make sure it is the same with your GMC/Chevylet key fob. This is a non-OEM product, accessory only! Package Included:1 x Car Keyless Entry Remote (Battery included). 100% satisfaction risk free purchase within 90 days: If the remote does not work out for any reason, simply contact us for a refund or replacement.