MACK issued a recall on the GU, and MRU models

On certain vehicles, the roll pin may not have been installed on the upper yoke on the steering shaft during assembly. If the roll pin is missing, the steering shaft may disconnect from the yoke. Separation of the shaft from the yoke would result in complete loss of steering, increasing the risk of a crash causing injury and/or damage to property. Correction: Dealers will inspect the steering shaft, and replace it if the roll pin is found missing.