2025 Mack TerraPro Recall: Loose Steering Gearbox Fasteners

Mack is recalling 341 model-year 2025 TerraPro trucks because the steering gearbox fasteners may loosen. A loose gearbox can lead to loss of steering and increase crash risk. The NHTSA campaign number is 26V509000, and Mack identifies the recall as SC0497.

What the recall means for owners

MACK: TERRAPRO (TE)

Dealers will inspect the steering gearbox fasteners and tighten or replace them as necessary, free of charge. Owner notification letters are expected to be mailed October 5, 2026. The repair description is an inspection-based remedy; it does not mean every truck needs the same replacement parts.

Official record — checked September 16, 2026

• NHTSA recall ID: 26V509000
• Vehicles listed: MACK TERRAPRO (TE) (2025)
• Potentially affected: 341
• Components: STEERING:CRITICAL FASTENERS; STEERING:GEAR BOX:MOUNTING BRACKET
• Report received: August 6, 2026
• Owner notification: Owner notification letters expected to be mailed October 5, 2026.
• Defect: Mack Trucks, Inc. (Mack) is recalling certain 2025 TerraPro trucks. The steering gearbox fasteners may loosen.
• Safety consequence: A loose steering gearbox can result in a loss of steering, increasing the risk of a crash.
• Remedy: Dealers will inspect and tighten or replace the fasteners as necessary, free of charge. Owner notification letters are expected to be mailed October 5, 2026. Owners may contact Mack’s customer service at 1-800-866-1177. Mack’s number for this recall is SC0497.

What owners should do next

Contact a Mack dealer about the steering gearbox fastener inspection under SC0497. Fleet operators should confirm the recall and repair status for each affected TerraPro VIN.

Use the official NHTSA recall lookup or contact the manufacturer or an authorized dealer to confirm recall status for your vehicle’s VIN. A matching model and year alone do not establish that a vehicle is included or that its repair is complete.

Official sources

• Current NHTSA campaign data for 26V509000, checked September 16, 2026; supports the current facts and notification wording above.
• Manufacturer Part 573 report submitted Aug 06, 2026. The report records the filing at that date; later status updates are attributed to the current campaign data.

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