4 Liter V6 Engine, Automatic Transmission, AC, Heat, Power Windows, 158,000 Miles, Seller States Tires w/ Less than 1000 Miles on them. Rear 2 Wheel Drive / 4Hi and Low. Seller States there is an issue when you are going highway speed. Some type of issue where the engine must get an electrical code and it seems to hit the next gear hard. Truck was brought to shop and they ran the codes and it came up as nothing transmission related or engine related (Unknown Issue)
