OER Parts offers a wide selection of Battery Accessories for your 2009 GMC Truck. OER Parts offers 2009 GMC Truck Battery Tender, 2009 GMC Truck Battery Managment System, 2009 GMC Truck Dual Battery System Controller Set, and 2009 GMC Truck Battery Relocation Set. Battery Mat Battery Topper Battery Terminal Protectors Battery Post Cleaning Brush Battery Terminal Puller