MACK 2020 MACK MD Recall
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2020 MACK MD
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 MD vehicles due to service brakes, hydraulic:pedals and linkages issues. An unsecured brake pedal can cause a loss of braking ability and increase the risk of a crash.. CRITICAL: Do not drive until repaired.
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
Mack Trucks, Inc. (Mack) is recalling certain 2020-2022 Mack MD vehicles. The cotter pin that retains the brake pedal clevis pin may not have been properly installed, which could result in an unsecured brake pedal.
Reported concern (NHTSA)
An unsecured brake pedal can cause a loss of braking ability and increase the risk of a crash.
Recommended Action
Per NHTSA guidance
Owners are advised to not drive their vehicles until the remedy has been performed. Dealers will inspect the cotter pin installation and repair it as necessary, free of charge. Owner notification letters were mailed on September 13, 2021. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0429.
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