NHTSA campaign 21V573000 · Mack campaign SC0427
Mack Recall 21V-573: Rear Axle Brakes May Fail
NHTSA recall 21V573000 (Mack campaign SC0427) was reported by Mack Trucks, Inc. on July 27, 2021, with 124 vehicles potentially affected (per NHTSA). NHTSA's record lists the Mack GRANITE (GR), Mack LR and Mack TE for the 2021 model year. Owners were notified on August 10, 2021, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 21V573000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 21V573000 (also written 21V-573 or 21V573)
- Filed by
- Mack Trucks, Inc.
- Mack campaign number
- SC0427
- Report received
- Potentially affected
- 124 vehicles (per NHTSA)
- Component
- Service Brakes, Air
- Owners notified
- Safety standard
- FMVSS 121
Repair completion: 70.97% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 21V573000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Mack
All Mack recallsNHTSA's recall notice
As NHTSA's recall record states it for campaign 21V573000.
Defect description
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.
Safety consequence
Inoperative rear axle brakes can increase the distance required to stop, increasing the risk of a crash.
Manufacturer remedy
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.
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.
Sources
Official NHTSA notice for recall 21V573000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.