# NHTSA recall 21V293000

A recall listed here may apply to a vehicle of this year, make and model. Only the manufacturer can say whether it applies to one vehicle: check the VIN with the official lookups.

- Published by: NHTSA \(United States\)
- Campaign number: 21V293000
- Manufacturer's number: SC0424
- Manufacturer: Mack Trucks, Inc.
- Reported: 2021\-04\-26
- Owners notified: 2021\-05\-12
- Component: STEERING
- Units potentially affected: 272
- Part numbers: 84726804

## What is wrong

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


## What can happen

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


## The 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.


## Remedy progress the manufacturer reported

- Report: Annual report 3, for 2025 quarter 2 to 2026 quarter 1
- Filed with NHTSA: 2026\-04\-15
- Vehicles in the campaign: 272
- Reported remedied: 223 \(81%\)
- Reported unreachable: 0
- Reported removed: 0

These are the manufacturer's totals for the whole campaign at the end of 2026 quarter 1, as filed with NHTSA. They do not say whether one vehicle has been remedied: check the VIN with the official lookups. The reports are from data as of 2026\-10\-19.

## Vehicles this campaign lists

- [2019 MACK LR](/makes/mack/lr/2019/recalls.md)
- [2020 MACK LR](/makes/mack/lr/2020/recalls.md)

## Bulletins for the same vehicles and component

A bulletin is the manufacturer's note to its dealers. It is not part of this recall.

- [CBR 2515\-1 102025](/bulletins/11024783.md), 2025-11-03, Service bulletin
- [S7643](/bulletins/10211023.md), 2022-05-05, Service bulletin
- [S7580](/bulletins/10191634.md), 2021-05-04, Service bulletin

## Check a VIN

- [NHTSA recall lookup by VIN, United States](https://www.nhtsa.gov/recalls)
- [Transport Canada recall search, Canada](https://wwwapps.tc.gc.ca/Saf-Sec-Sur/7/VRDB-BDRV/search-recherche/menu.aspx?lang=eng)

JSON: [/v1/recalls/nhtsa/21V293000](/v1/recalls/nhtsa/21V293000)

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