CarRecallWatch- Component
- SERVICE BRAKES, AIR:DRUM
- Problem
- Mack Trucks, Inc. (Mack) is recalling certain 2026 Mack GR trucks. The brake drum and steer axle combination are incompatible, which may cause a loss of brake function. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."
- Risk
- Reduced brake function can extend the distance required to stop, increasing the risk of a crash.
- Remedy
- Dealers will replace the steer axle brake drums, free of charge. Owner notification letters were mailed August 27, 2025. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0482.
What this recall means for you
Certain 2026 Mack GR trucks have a steer axle brake drum that is incompatible with the steer axle assembly it is paired with. This mismatch may cause a loss of brake function, meaning the vehicle does not meet the requirements of Federal Motor Vehicle Safety Standard 121 for air brake systems.
Reduced brake function can lengthen the distance needed to stop the truck, which increases the risk of a crash. Drivers of affected trucks should take this seriously, especially when hauling loads or driving in traffic.
Dealers will replace the steer axle brake drums free of charge. Owner notification letters were mailed on August 27, 2025. If you have questions, contact Mack customer service at 1-800-866-1177, and check your vehicle identification number (VIN) for open recalls.
Check whether this recall is open on your vehicle
Official recall notice
Affected vehicles
| Mack Granite GR (4) | 2026 |
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