PACCAR issued a recall on multiple vehicle models

Certain vehicles fail to comply with requirements of CMVSS 121 - Air Brake System. The air lines were incorrectly constructed with only four layers of extruded nylon material, instead of the specified five layers. Should the air lines develop a leak, while the vehicle is in motion, it could cause the air brake system to fail, which would engage the rear spring brakes, slowing the vehicle to a stop, and preventing it from being driven. Correction: Dealers will inspect and, if required, replace the air lines.