Peterbilt 536, 548 +1 more: Powertrain

Affects Peterbilt 536, 548, 537 · 2023–2024 — about 5 vehicles.

The hazard

Issue: 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.

What to do

Contact your dealer; the remedy details were not included in the filing.

Critical — crash/injury risk now High — injury risk; see remedy Moderate — fix at next service Low — minor / informational