OER Parts offers a wide selection of Rear End Components for your 1988 GMC C1500. OER Parts offers 1988 GMC C1500 Axle Shafts & Parts, 1988 GMC C1500 Differential, 1988 GMC C1500 Differential Covers, 1988 GMC C1500 Differential Hardware, 1988 GMC C1500 Differential Tools, 1988 GMC C1500 Driveshaft, 1988 GMC C1500 Driveshaft Safety Loops, 1988 GMC C1500 Gaskets & Seals, 1988 GMC C1500 Performance Rear Ends, 1988 GMC C1500 Ring & Pinion Gears, and 1988 GMC C1500 U-Joints and Parts.