Peterbilt 535, 536 +2 more: Vehicle speed control — accelerator pedal

Affects Peterbilt 535, 536, 537, 548 · 2023–2024 — about 1K vehicles.

The hazard

A pedal that sticks increases the risk of a crash.

What to do

Dealers will inspect and replace the throttle pedal as necessary, free of charge. Owner letters were mailed April 11, 2025. Owners may contact Peterbilt's customer service at 1-940-591-4220 and Kenworth's customer service at 1-425-828-5888. PACCAR's numbers for this recall are 25PBA and 25KWA.

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