2025–2026 Mack Pioneer PR (4) recall: equipment
⚠️ What's wrong
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.
Is the fix free? Yes. Safety recall repairs are free at any authorized dealer under federal law, including parts and labor. (Vehicles more than 15 years old when the recall was announced can be excluded, but most manufacturers still fix them.)
- NHTSA campaign
- 25V801000
- Manufacturer recall #
- SC0489
- Manufacturer
- Mack Trucks, Inc.
- Vehicles affected
- 46
- Component
- EQUIPMENT:MECHANICAL
- Owner phone
- 1-800-866-1177
- NHTSA hotline
- 1-888-327-4236
- Owner letters mailed
- Dec 18, 2025
- Recall started by
- MFR