NHTSA Recall 21V684000: Pedals and linkages (service brakes)
Do not drive Mack Trucks, Inc. reported this safety recall to NHTSA on , covering an estimated 2,823 vehicles. It affects 2020–2022 Mack Md.
| NHTSA campaign | 21V684000 |
|---|---|
| Manufacturer campaign | SC0429 |
| Component | SERVICE BRAKES, HYDRAULIC › PEDALS AND LINKAGES |
| Report received | September 1, 2021 |
| Owner notification | September 13, 2021 |
| Initiated by | Manufacturer |
Defect
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.
Safety risk
An unsecured brake pedal can cause a loss of braking ability and increase the risk of a crash.
Remedy
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.
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.
Vehicles covered by recall 21V684000
Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.