OER Parts offers a wide selection of Rear End Components for your 1990 GMC Jimmy. OER Parts offers 1990 GMC Jimmy Axle Shafts & Parts, 1990 GMC Jimmy Differential, 1990 GMC Jimmy Differential Covers, 1990 GMC Jimmy Differential Hardware, 1990 GMC Jimmy Differential Tools, 1990 GMC Jimmy Driveshaft, 1990 GMC Jimmy Driveshaft Safety Loops, 1990 GMC Jimmy Gaskets & Seals, 1990 GMC Jimmy Performance Rear Ends, 1990 GMC Jimmy Ring & Pinion Gears, and 1990 GMC Jimmy U-Joints and Parts.