The 250-1848 is a complete Rostra cruise control upgrade for the 2007-2008 Chevy Silverado. This kit is NOT applicable to the 2007 CLassic body style. This kit does NOT require dealer programming. Easy installation with very little disassembly. All connections are done under drivers under dash area. Kit comes with complete installation instructions. Please call with any application or installation questions regarding this kit. Applicable to gas and diesel models.