OER Parts offers a wide selection of Manual Transmissions & Parts for your 2003 GMC Jimmy. OER Parts offers 2003 GMC Jimmy Bearings, 2003 GMC Jimmy Boots, 2003 GMC Jimmy Complete Transmissions, 2003 GMC Jimmy Flywheel, 2003 GMC Jimmy Gaskets, Seals & Filters, 2003 GMC Jimmy Gears, 2003 GMC Jimmy Hardware, 2003 GMC Jimmy Shift Knobs, 2003 GMC Jimmy Shift Linkage, 2003 GMC Jimmy OE Shifters, and 2003 GMC Jimmy Performance Shifters.