What Does 4A Mean In A Truck - Web the most common driving mode in most automobiles is 4a. It enables the car to travel at a slower speed, improving the comfort. Web 4a refers to the fourth generation of the automatic transmission control system (atcs) used in trucks.
Web 4a refers to the fourth generation of the automatic transmission control system (atcs) used in trucks. Web the most common driving mode in most automobiles is 4a. It enables the car to travel at a slower speed, improving the comfort.