OER Parts offers a wide selection of Rear End Components for your 1980 GMC C2500. OER Parts offers 1980 GMC C2500 Axle Shafts & Parts, 1980 GMC C2500 Differential, 1980 GMC C2500 Differential Covers, 1980 GMC C2500 Differential Hardware, 1980 GMC C2500 Differential Tools, 1980 GMC C2500 Driveshaft, 1980 GMC C2500 Driveshaft Safety Loops, 1980 GMC C2500 Gaskets & Seals, 1980 GMC C2500 Performance Rear Ends, 1980 GMC C2500 Ring & Pinion Gears, and 1980 GMC C2500 U-Joints and Parts.