Vehicles HIGH RISK Updated 2026-09-28

Software Calculation Error May Cause Reduced Braking Performance

Recalled Product

Mack Trucks, Inc.

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Hazard / Issue

Mack Trucks, Inc. (Mack) is recalling certain 2026-2027 Anthem AN (4) and Pioneer PR (4) vehicles equipped with a tanker application package. Inaccurate axle load calculations may cause reduced braking performance while transporting smoothbore tanker trailers.

Issued by

Mack Trucks, Inc.

Distribution: Nationwide (United States)

✅ What Should You Do?

  1. 1Stop driving this vehicle immediately — this recall involves a critical safety risk.
  2. 2Contact your nearest Mack Trucks, Inc. dealer to schedule a FREE recall repair.
  3. 3By federal law, dealers must perform recall repairs at no cost to you.
  4. 4Check if your vehicle has other open recalls →
  5. 5File a complaint with NHTSA if your dealer refuses to perform the recall repair.

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