Power train: drivelineRecall 23V-504 · Kenworth and Peterbilt vehicles
PACCAR Incorporated recall 23V-504 covers 72 Kenworth and Peterbilt vehicles for a power train: driveline problem, reported to NHTSA on July 21, 2023. The manufacturer's latest report (2025 Q3) shows 78% of affected vehicles repaired.
Source: NHTSA recall 23V504000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
PACCAR Incorportated (PACCAR) is recalling certain 2023-2024 Peterbilt 536, 537, 548, 2023-2024 Kenworth T280, T480, and 2024 Kenworth T380 vehicles. The adhesive thread-lock may not have been applied to the four flange mounted yoke bolt threads, allowing the driveline fasteners to loosen.
The risk
Loose fasteners may allow the driveline to separate from the truck, increasing the risk of a crash.
The fix
Dealers will apply adhesive thread-lock and replace the fasteners, free of charge. Owner notification letters are expected to be mailed September 19, 2023. Owners may contact PACCAR's customer service at 1-425-828-5888 (Kenworth) or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 23KWE and 23PBE.
Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
78%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA. 1 vehicles were listed as unreachable.