1988 GMC 6500 Grain Truck For Sale. Details below: - 55,750 KM’s - 15.5x 8 x4 Box - Hoist - 10 x20 rear tires - 12 x 22.5 Front tires - 366 V8 Engine - 5 Speed 2 Speed Rear Axle Price reduced to $6,500+GST. Located at a farm near Watrous, SK. For pick up only. No trades considered. Listed on other sites.