Mack Trucks, Inc.: Equipment › Mechanical
Mack Trucks, Inc. reported this defect to federal regulators on Nov 20, 2025 and put the number of vehicles at risk at 46. The repair is free for as long as the recall stands.
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.
2 model years covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 2026 Mack Pioneer PR (4) | 0 | 9 | 0 | 0 |
| 2025 Mack Pioneer PR (4) | 0 | 12 | 0 | 0 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 25V801000.
Full record for the 2026 Mack Pioneer PR (4) → · Recalls carrying a do-not-drive advisory → · Where this data comes from →