NHTSA campaign 21V476000 · Mack campaign SC0426
Mack Recall 21V-476: Lower Rear Pivot Cap Screws may be too Short
NHTSA recall 21V476000 (Mack campaign SC0426) was reported by Mack Trucks, Inc. on June 25, 2021, with 8 vehicles potentially affected (per NHTSA). NHTSA's record lists the Mack GRANITE (GU) for model years 2020–2021. Owners were notified on July 30, 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 21V476000 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
- 21V476000 (also written 21V-476 or 21V476)
- Filed by
- Mack Trucks, Inc.
- Mack campaign number
- SC0426
- Report received
- Potentially affected
- 8 vehicles (per NHTSA)
- Component
- Suspension — Multiple Axle
- Owners notified
Repair completion: 100% (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 21V476000. 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 21V476000.
Defect description
Mack Trucks, Inc. (Mack Trucks) is recalling certain 2020-2021 Granite vehicles equipped with certain SL2065 steerable lift axles. The lower rear pivot cap screws may not be long enough to sufficiently engage the locking feature of the corresponding nuts.
Safety consequence
The short screws can cause the hardware to separate from the suspension system and become a road hazard, increasing the risk of a crash or injury.
Manufacturer remedy
Mack Trucks will inspect the suspension system and replace the lower rear pivot cap screws, as necessary, free of charge. Owner notification letters were mailed on July 30, 2021. Owners may contact Mack Trucks' customer service at 1-800-866-1177. Mack Trucks' number for this recall is SC0426.
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 21V476000
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.