Vehicle recall 21V574000 · July 27, 2021
2022 Mack MD
The spring hanger brackets on the front suspension may have loose bolts.
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 2022 Medium-Duty Trucks. The spring hanger brackets on the front suspension may have loose bolts.
- Consequence
- Loose suspension bolts can detach, possibly resulting in a loss of vehicle control and increasing the risk of a crash.
- Remedy
- Dealers will tighten the spring hanger bracket bolts, free of charge. Owner notification letters were mailed on August 17, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0428.
- 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
- 21V574000
- Reported to NHTSA
- July 27, 2021
- Filed by
- Mack Trucks, Inc.
- Manufacturer campaign
- SC0428
- Owner notification
- August 17, 2021
- Vehicles potentially affected
- 60
- Initiated by
- the manufacturer
- Components
- Suspension › Front › Springs › Leaf spring assembly › Hanger,bracket
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.