2025–2026 Mack Pioneer PR (4) Recall: Load lock clamps, located on the back of the cab, may loosen and cause the…
NHTSA campaign 25V801000 · Equipment · filed Nov 20, 2025 · verified Jul 30, 2026
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.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
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
| Make | Model | Model years |
|---|---|---|
| Mack | Pioneer PR (4) | 2025, 2026 |
Related recalls
More Mack Pioneer PR (4) recalls
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- 2027 Mack Anthem AN (4) and 1 other model — Trailer turn signals may not function properly
- 2026 Mack Anthem AN (4) and 1 other model — Automatic high beams (AHB) may not switch to low beam…
- 2025–2026 Mack Pioneer PR (4) — When towing a trailer, the trailer lights may fail to…
Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 25V801000 (manufacturer number SC0489). Data last verified Jul 30, 2026.