MACK 2023 MACK MD Recall
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2023 MACK MD
Brand
MACK
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Products Sold
Model Year 2023
Mack Trucks, Inc. is recalling certain 2023 MACK MD vehicles due to engine and engine cooling:engine:engine control module (ecu/ecm) issues. An unexpected engine shut down can increase the risk of a crash..
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
Mack Trucks, Inc. (Mack) is recalling certain 2023 MD6/7 trucks. The engine control module (ECM) may experience an internal short-circuit, which can result in an unexpected engine shut down.
Reported concern (NHTSA)
An unexpected engine shut down can increase the risk of a crash.
Recommended Action
Per NHTSA guidance
Cummins will replace the ECM, free of charge. Owner notification letters were mailed on September 27, 2022. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0438.
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