OER Parts offers a wide selection of Battery Accessories for your 1961 GMC Suburban. OER Parts offers 1961 GMC Suburban Battery Tender, 1961 GMC Suburban Battery Managment System, 1961 GMC Suburban Dual Battery System Controller Set, and 1961 GMC Suburban Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller