PACCAR issued a recall on multiple vehicle models

On certain vehicles, the bearing surfaces of the extended lube universal joint that attaches the inter-axle driveline to the drive axle may become prematurely worn due to breakdown of the lubrification and/or excessive heat. Prematurely worn bearing surfaces may result in the u-joint becoming loose and/or binding. If undetected, the condition may result in universal joint failure, allowing the inter-axle driveline to detach from the axle, which may cause the vehicle to become disabled in the roadway. Lost propulsion, in conjunction with traffic, road conditions, and the driver's reactions, could increase the risk of a crash. In addition a driveline component separating from the vehicle could strike another vehicle, stationary object, or bystander, causing property damage and/or personal injury. Correction: Dealers will inspect and, if necessary, replace the interaxle driveline universal joint.