Equipment: mechanicalRecall 25V-801 · 2025–2026 Mack Pioneer PR (4)
Mack Trucks, Inc. recall 25V-801 covers 46 2025–2026 Mack Pioneer PR (4) for a equipment: mechanical problem, reported to NHTSA on November 20, 2025. The manufacturer's latest report (2026 Q3) shows 87% of affected vehicles repaired.
Source: NHTSA recall 25V801000 and manufacturer quarterly reports. Started by the manufacturer.
The problem
Mack Trucks, Inc. (Mack) is recalling certain 2025-2026 Pioneer vehicles. The load lock clamps, located on the back of the cab, may loosen and cause the load lock bars to become unsecured.
The risk
A loose or unsecured load lock bar can result in a loss of cargo, creating a road hazard and increasing the risk of a crash.
The fix
Dealers will replace the load lock clamps, free of charge. Owner notification letters were mailed December 18, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0489. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning November 27, 2025.
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
87%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.
Vehicles in this recall
Built from October 22, 2024 to October 16, 2025. Not every vehicle in these model years is included; check by VIN.