Recall · 25V801000
Mack Trucks recalled the MACK Pioneer PR (4) over equipment
46
Vehicles covered
1
Model
2
Model years
November 20, 2025
Filed with NHTSA
EQUIPMENT:MECHANICAL
- 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.
- What it can cause
- 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.
- What the dealer does
- 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.
The repair is free, whatever the age or mileage of the vehicle, and whether or not you are the original owner.
Which vehicles
A recall reaches a range of VINs inside these model years, not every car built in them. Yours may not be covered even if it is listed here, and the only way to find out is NHTSA's own VIN lookup .
| Vehicle | Model years | Safety record |
|---|---|---|
| MackPioneer PR (4) | 2025 to 2026 | Not published here |
How this campaign compares
At 46 vehicles this is a small campaign: 79% of the 19,818 vehicle recalls filed since 1995 whose size NHTSA published are as large or larger. The middle campaign on file covers 472. It covers model years 2025 to 2026, and the defect was reported to NHTSA in 2025, at or before the oldest model year it covers — as current as a recall gets.
Mack vehicles have been recalled over the equipment 3 times before this, most recently in May 2025 as 25V352000. That is not evidence the earlier repair failed.
The vehicles on this campaign carry 6 other recalls published here, the newest being: 26V351000 (wheels), 26V261000 (service brakes, air), 26V207000 (exterior lighting), 25V803000 (exterior lighting).
Check your own car
A VIN check is the only answer for a specific vehicle, and it also shows every other open recall on it, which is usually the reason it is worth doing rather than reading one campaign.
Filed by Mack Trucks, Inc. with NHTSA on November 20, 2025 as campaign 25V801000. Every word of the defect, consequence and remedy above is NHTSA's published record of that filing, not a summary of it.
Compiled and maintained by guarledes . Data last checked 2025-11-20.
Independent developer and analyst