Vehicle recall 21V293000 · April 26, 2021
2019-2020 Mack LR
The steering transfer case may have an insufficient amount of oil.
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 2019-2020 LR vehicles. The steering transfer case may have an insufficient amount of oil.
- Consequence
- The internal bearings may fail without sufficient lubrication, causing steering lock-up and increasing the risk of a crash.
- Remedy
- Dealers will replace the transfer case, free of charge. Owner notifications letters were mailed on May 12, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0424.
- 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.safercar.gov.
Recall details
- NHTSA campaign
- 21V293000
- Reported to NHTSA
- April 26, 2021
- Filed by
- Mack Trucks, Inc.
- Manufacturer campaign
- SC0424
- Owner notification
- May 12, 2021
- Vehicles potentially affected
- 272
- Initiated by
- the manufacturer
- Components
- Steering
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.