GMC Jimmy 1991 Manual Gasoline mileage: 300 KM or more 4WD Good day to you all. For sale: GMC Jimmy Model: 91 Engine: 350 Transmission: Converted to manual Undergoing restoration. Selling as-is. Engine and transmission are in good condition. 4WD is working. Interior is newly upholstered and ready. New tires. Registration and inspection have expired.