OER Parts offers a wide selection of Battery Accessories for your 1976 GMC C35. OER Parts offers 1976 GMC C35 Battery Tender, 1976 GMC C35 Battery Managment System, 1976 GMC C35 Dual Battery System Controller Set, and 1976 GMC C35 Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller