On a small number of trucks, the bolts that attach the driveshaft may loosen. If this happens, the driveshaft could separate from the truck and cause a loss of power to the wheels.
Safety Risk
A sudden loss of power to the wheels could increase the risk of a crash. Additionally, a driveshaft that detaches from a vehicle could create a hazard for others and increase the risk of a crash.
Corrective Actions
PACCAR will notify owners by mail and advise you to take your truck to a dealership to replace the driveshaft bolts.