Defect Description
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.
Safety 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.
Affected Vehicles
| Year | Make | Model |
|---|---|---|
| 2025 | MACK | PIONEER PR (4) |
| 2026 | MACK | PIONEER PR (4) |
Check your vehicle: Visit NHTSA.gov and enter your VIN to see if your specific vehicle is affected.