The defect
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 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.
NHTSA's own wording · initiated by MFR
Vehicles covered
| Model | Model years |
|---|---|
| Mack Pioneer PR (4) | 2025, 2026 |
Components: EQUIPMENT:MECHANICAL
Model years in this recall
NHTSA complaints and the number of recall campaigns for each model year this recall covers.
| Model | Year | Complaints | Recalls |
|---|---|---|---|
| Mack Pioneer PR (4) | 2025 | 0 | 12 |
| Mack Pioneer PR (4) | 2026 | 0 | 9 |
Other equipment recalls in 2025
110 of the 891 recall campaigns reported to NHTSA in 2025 concerned the equipment; Mack Trucks, Inc. filed 118 campaigns in all.
| 25V910000 23 Dec 2025 | Spartan Fire, LLC |
| 25V909000 23 Dec 2025 | Altec Industries, Inc. |
| 25V847000 9 Dec 2025 | Jayco, Inc. |
| 25V820000 26 Nov 2025 | Altec Industries, Inc. |
| 25V819000 25 Nov 2025 | General Motors, LLC |
| 25V815000 25 Nov 2025 | General Motors, LLC |
| 25V814000 24 Nov 2025 | Pleasant Valley Teardrop Trailers LLC |
| 25V802000 20 Nov 2025 | Volvo Trucks North America |
NHTSA recalls (public domain) · all recalls of 2025