Unique Bargains New 3 Buttons Key Shell Only Case Keyless Entry Fob Remote Control Case Replacement 21997127 for Cadillac for Chevrolet for GMC for Hummer

It does not replace the core electronics; Any existing defects of the electronic core will not be fixed by the shell replacement; Key Case And Key Only; No Electronic Internals.

Before replacing our key shell, please make sure the battery and chip must be intact and have been successfully programmed; Otherwise, even if the key shell is replaced, the damaged chip also does not work.

Please pay special attention to the protection of PCB circuit board and anti-static breakdown chip during the disassembly and installation process, which can avoid damaging the chip and being not work.

Please ensure your current remote key and key blade fits exactly the same as in the specifications and the key sample picture.

Please check the above Fit for part number; Please be sure that your vehicle is listed on the guide; Also, Please make sure that your current key and remote look like those picture to insure that this Replacement Key Fob will work for you.