OER Parts offers a wide selection of Battery Accessories for your 2003 GMC Jimmy. OER Parts offers 2003 GMC Jimmy Battery Tender, 2003 GMC Jimmy Battery Managment System, 2003 GMC Jimmy Dual Battery System Controller Set, and 2003 GMC Jimmy Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller