Programming: No Programming Necessary, Just Swap Electronics.The Keyless Entry Shell constructed with Premium quality materials for long lasting durabilityNotice: This product only provides the key case, not the complete finished key, please check Vehicle Fitment Chart for Body Style and other vehicle attributes carefully before purchaseFriendly Customer Service: If you have any questions or concerns about our keyless fob Replacement ,our friendly and knowledgeableEasy to use and reliable performance: The Replacement of this keyless entry remote control car key case is quick and easy, you only need to correspond the function buttons one by one. The material of the key shell has ultra-high precision density, which ensures that it is not easily damaged for long-term useFitment: The Keyless Entry Remote shell fit for 2019-2020 for Chevrolet Silverado 1500 2.7L,2020 for Chevrolet Silverado 1500 3L,2019-2020 for Chevrolet Silverado 1500 4.3L,2019-2020 for Chevrolet Silverado 1500 5.3L,2019-2020 for Chevrolet Silverado 1500 6.2L,2019-2020 for Chevrolet Silverado 2500 HD 6.6L,2019 for Chevrolet Silverado 2500 HD 6L,2019-2020 for Chevrolet Silverado 3500 HD 6.6L