OER Parts offers a wide selection of Manual Transmissions & Parts for your 1992 GMC Truck. OER Parts offers 1992 GMC Truck Bearings, 1992 GMC Truck Boots, 1992 GMC Truck Complete Transmissions, 1992 GMC Truck Flywheel, 1992 GMC Truck Gaskets, Seals & Filters, 1992 GMC Truck Gears, 1992 GMC Truck Hardware, 1992 GMC Truck Shift Knobs, 1992 GMC Truck Shift Linkage, 1992 GMC Truck OE Shifters, and 1992 GMC Truck Performance Shifters.