Vehicle recall 25V801000 · November 20, 2025
2025-2026 Mack Pioneer PR (4)
The load lock clamps, located on the back of the cab, may loosen and cause the load lock bars to become unsecured.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- 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.
- Consequence
- 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.
- Remedy
- 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 details
- NHTSA campaign
- 25V801000
- Reported to NHTSA
- November 20, 2025
- Filed by
- Mack Trucks, Inc.
- Manufacturer campaign
- SC0489
- Owner notification
- December 18, 2025
- Vehicles potentially affected
- 46
- Initiated by
- the manufacturer
- Components
- Equipment › Mechanical
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
- Mack Pioneer PR (4) (2025-2026): 2026, 2025
Has your Mack been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.