Vehicle recall 21V573000 · July 27, 2021
Mack Granite (gr), LR and 1 more model
The rear drive axle may have the incorrect type of brake cam installed, which could result in inoperative rear axle brakes.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Mack Trucks, Inc. (Mack) is recalling certain 2021 Granite, LR, and TerraPro vehicles. The rear drive axle may have the incorrect type of brake cam installed, which could result in inoperative rear axle brakes.
- Consequence
- Inoperative rear axle brakes can increase the distance required to stop, increasing the risk of a crash.
- Remedy
- Dealers will inspect the brake cams, and incorrect brake cams will be replaced, along with brake shoes, hardware, and wheel seals, as necessary, free of charge. Owner notification letters were mailed on August 10, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0427.
- Notes
- Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Recall details
- NHTSA campaign
- 21V573000
- Reported to NHTSA
- July 27, 2021
- Filed by
- Mack Trucks, Inc.
- Manufacturer campaign
- SC0427
- Owner notification
- August 10, 2021
- Vehicles potentially affected
- 124
- Initiated by
- the manufacturer
- Components
- Service brakes, air
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
Has your Mack been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.