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NHTSA campaign 21V293000 · Mack campaign SC0424

Mack Recall 21V-293: Insufficient Lubrication in Steering Transfer Case

NHTSA recall 21V293000 (Mack campaign SC0424) was reported by Mack Trucks, Inc. on April 26, 2021, with 272 vehicles potentially affected (per NHTSA). NHTSA's record lists the Mack LR for model years 2019–2020. Owners were notified on May 12, 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 21V293000 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
21V293000 (also written 21V-293 or 21V293)
Filed by
Mack Trucks, Inc.
Mack campaign number
SC0424
Report received
Potentially affected
272 vehicles (per NHTSA)
Component
Steering
Owners notified

Repair completion: 81.99% (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 21V293000. 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 recalls

NHTSA's recall notice

As NHTSA's recall record states it for campaign 21V293000.

Defect description

Mack Trucks, Inc. (Mack) is recalling certain 2019-2020 LR vehicles. The steering transfer case may have an insufficient amount of oil.

Safety consequence

The internal bearings may fail without sufficient lubrication, causing steering lock-up and increasing the risk of a crash.

Manufacturer remedy

Dealers will replace the transfer case, free of charge. Owner notifications letters were mailed on May 12, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0424.

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.safercar.gov.

Sources

Official NHTSA notice for recall 21V293000

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.