MACK 2020 MACK LR Recall
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2020 MACK LR
Brand
MACK
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Products Sold
Model Year 2020
Mack Trucks, Inc. is recalling certain 2020 MACK LR vehicles due to steering issues. The internal bearings may fail without sufficient lubrication, causing steering lock-up and increasing the risk of a crash..
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
Mack Trucks, Inc. (Mack) is recalling certain 2019-2020 LR vehicles. The steering transfer case may have an insufficient amount of oil.
Reported concern (NHTSA)
The internal bearings may fail without sufficient lubrication, causing steering lock-up and increasing the risk of a crash.
Recommended Action
Per NHTSA guidance
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.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026