OER Parts offers a wide selection of Battery Accessories for your 1979 GMC Caballero. OER Parts offers 1979 GMC Caballero Battery Tender, 1979 GMC Caballero Battery Managment System, 1979 GMC Caballero Dual Battery System Controller Set, and 1979 GMC Caballero Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller