2025-2026 Mack Pioneer PR (4) recall: Load Lock Clamps May Fail
Report received by NHTSA: Nov. 20, 2025.
Built by the Tribune's code from NHTSA's official records. No AI wrote this page. Updated Nov. 7, 2026.
- What's recalled
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.
- Who's affected
46 vehicles potentially affected, according to NHTSA. Models: 2025-2026 Mack Pioneer PR (4).
- Compared with
Mack Trucks, Inc. has 10 NHTSA recalls in 2026 so far, compared with 17 in all of 2025.
Counted by the Tribune from NHTSA's records since Nov. 1, 2016.
- Before this
2 earlier NHTSA recalls for these models since Nov. 1, 2016:
- Sept. 18, 2025 2025-2026 Mack Pioneer PR (4) recall: Inoperative Trailer Lighting (agency record)
- Aug. 11, 2025 2025-2026 Mack Pioneer PR (4), 2025 Mack Anthem (an) recall: Loss of Steering Control (agency record)
Counted by the Tribune from NHTSA's records since Nov. 1, 2016.
- What to do and when
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.
NHTSA's record, word for word
- Check it yourself
NHTSA's VIN lookup shows whether a specific vehicle has an open recall.
Models in this recall
- Mack Pioneer PR (4) 2025-2026
The record as NHTSA published it
| NHTSA recall number | 25V801000 |
|---|---|
| Manufacturer | Mack Trucks, Inc. |
| Recall type | Vehicle |
| Component | EQUIPMENT |
| Report received by NHTSA | Nov. 20, 2025 |
| Potentially affected | 46 vehicles |
| Manufacturer's recall number | SC0489 |
| “Do not drive” warning | No |
| Fire risk when parked (“park outside”) | No |
Source: National Highway Traffic Safety Administration recall records (public domain). NHTSA's record