Mack recall: Steering
What is wrong
Mack Trucks, Inc. (Mack) is recalling certain 2021 Granite and LR vehicles. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist.
What could happen
A loss of power steering assist increases the risk of a crash.
The fix
Dealers will replace the power steering pump, free of charge. Owner notification letters were mailed on December 10, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0432.
Vehicles covered
- Mack Granite (Gr) 2021
- Mack Lr 2021
Facts
- NHTSA recall number
- 21V856000
- Type
- Vehicle
- Filed by
- Mack Trucks, Inc.
- Reported to NHTSA
- Nov 3, 2021
- Owners notified
- Dec 10, 2021
- Vehicles or items affected
- 79
- Started by
- The manufacturer
- Built
- –
- Part
- Steering › Hydraulic power assist › Pump
- Maker's own recall number
- SC0432
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.
Other recalls for the same vehicles
- Mack recall: Wheels May 28, 2026
- Mack recall: Exterior lighting Nov 3, 2025
- Mack recall: Seat belts Oct 6, 2025
- Mack recall: Electrical system Jun 10, 2025
- Mack recall: Service brakes, hydraulic Oct 23, 2024
- Mack recall: Tires Oct 18, 2024
To check one car, enter its 17-character VIN on the official NHTSA page: a recall may cover only some vehicles of a model year.
Recall data: National Highway Traffic Safety Administration (NHTSA). Nebula is not affiliated with or endorsed by NHTSA.