OER Parts offers a wide selection of Automatic Trans & Components for your 1975 GMC Jimmy. OER Parts offers 1975 GMC Jimmy Complete Transmission, 1975 GMC Jimmy Cooler Lines, 1975 GMC Jimmy Dipsticks & Tubes, 1975 GMC Jimmy Flex Plate, 1975 GMC Jimmy Gaskets, Seals, Filters & Hardware 1975 GMC Jimmy Modulator Valves, 1975 GMC Jimmy Shift Knobs, 1975 GMC Jimmy Shift Linkage, 1975 GMC Jimmy Shifters - OE, 1975 GMC Jimmy Shifters - Performance, 1975 GMC Jimmy Torque Converter & Covers, 1975 GMC Jimmy Transmission Pans, and 1975 GMC Jimmy Vacuum Lines.