Service brakes, hydraulic: pedals and linkagesRecall 21V-684 · 2020–2022 Mack MD

Mack Trucks, Inc. recall 21V-684 covers 2,823 2020–2022 Mack MD for a service brakes, hydraulic: pedals and linkages problem, reported to NHTSA on September 1, 2021. The manufacturer's latest report (2023 Q2) shows 98% of affected vehicles repaired.

Do not drive these vehicles until repaired

98%
Vehicles repaired2,757 of 2,823 · 2023 Q2
Vehicles affected2,8231 model
ReportedSep 1, 2021Owners notified Sep 13, 2021
Complaints since0Same system, after the recall

Source: NHTSA recall 21V684000 and manufacturer quarterly reports. Started by the manufacturer.

What's wrong

The problem

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.

The risk

An unsecured brake pedal can cause a loss of braking ability and increase the risk of a crash.

What to do

The fix

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.

Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.

Repair progress

How fast cars are being fixed

98%repaired

Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.

0%50%100%2021 Q32023 Q2
1 model

Vehicles in this recall