OER Parts offers a wide selection of Manual Transmissions & Parts for your 1976 GMC Truck. OER Parts offers 1976 GMC Truck Bearings, 1976 GMC Truck Boots, 1976 GMC Truck Complete Transmissions, 1976 GMC Truck Flywheel, 1976 GMC Truck Gaskets, Seals & Filters, 1976 GMC Truck Gears, 1976 GMC Truck Hardware, 1976 GMC Truck Shift Knobs, 1976 GMC Truck Shift Linkage, 1976 GMC Truck OE Shifters, and 1976 GMC Truck Performance Shifters.