Service brakes, airRecall 21V-573 · Mack vehicles

Mack Trucks, Inc. recall 21V-573 covers 124 Mack vehicles for a service brakes, air problem, reported to NHTSA on July 27, 2021. The manufacturer's latest report (2023 Q2) shows 62% of affected vehicles repaired.

62%
Vehicles repaired77 of 124 · 2023 Q2
Vehicles affected1243 models
ReportedJul 27, 2021Owners notified Aug 10, 2021
Complaints since0Same system, after the recall

Source: NHTSA recall 21V573000 and manufacturer quarterly reports. Started by the manufacturer.

What's wrong

The problem

Mack Trucks, Inc. (Mack) is recalling certain 2021 Granite, LR, and TerraPro vehicles. The rear drive axle may have the incorrect type of brake cam installed, which could result in inoperative rear axle brakes.

The risk

Inoperative rear axle brakes can increase the distance required to stop, increasing the risk of a crash.

What to do

The fix

Dealers will inspect the brake cams, and incorrect brake cams will be replaced, along with brake shoes, hardware, and wheel seals, as necessary, free of charge. Owner notification letters were mailed on August 10, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0427.

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

62%repaired

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

0%50%100%2021 Q32023 Q2
3 models

Vehicles in this recall