Mack Trucks, Inc.: Service Brakes, Air › Drum
Mack Trucks, Inc. reported this defect to federal regulators on Jul 29, 2025 and put the number of vehicles at risk at 36. The repair is free for as long as the recall stands.
The defect
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."
The risk
Reduced brake function can extend the distance required to stop, increasing the risk of a crash.
The 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.
1 model year covered
Newest first| Vehicle | Complaints | Recalls | Fires | Crashes |
|---|---|---|---|---|
| 2026 Mack Granite GR (4) | 0 | 2 | 0 | 0 |
What this page is, and what to do next
A recall is not an opinion. It is a Part 573 report a manufacturer is required by federal law to file once it decides a defect poses an unreasonable risk to safety, and it commits them to repairing the vehicle at no cost to the owner. The three passages above are the manufacturer’s own wording as published by NHTSA.
This page describes the campaign. It cannot tell you whether one particular car has already been through the shop — that is tracked by VIN, and only the manufacturer knows it. Check yours at nhtsa.gov/recalls or with a franchised dealer, quoting campaign number 25V495000.
Full record for the 2026 Mack Granite GR (4) → · Recalls carrying a do-not-drive advisory → · Where this data comes from →