MACK issued a recall on the CHU, CXU, and GU models

On certain vehicles, the hardware used to affix the windshield wiper linkage to the wiper motor may have been subject to rust and corrosion before assembly. This contamination may have prevented the bolt/nut from being tightened adequately. As a result, the bolt/nut may loosen to a point where the linkage detaches from the wiper motor, which would cause the wipers to stop functioning. Loss of windshield wiping capability, should it occur during a rainy/snowy day, may compromise the driver's ability to see the road and its users, which could result in a crash causing property damage and/or personal injury. Correction: Dealers will replace the hardware in question.