Peterbilt 389, 579 +3 more: Electrical system — software

Affects Peterbilt 389, 579, 537, 567, 536 · 2019–2022 — about 908 vehicles.

The hazard

Unintended vehicle movement can increase the risk of a crash or injury.

What to do

Dealers will update the vehicle software, free of charge. Owner notification letters were mailed on January 3, 2022. Owners may contact PACCAR customer service at 1-425-828-5888 (Kenworth); or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 21KWG and 21PBM.

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