Mack Trucks (Mack) is recalling certain 2021 Granite and LR vehicles. A machining defect may cause pressure to build in the power steering pump and break the shaft seal, resulting in a loss of power steering assist.
Mack Trucks – Broken Shaft Seal May Cause Loss of Power Steering
| Report Received Date | 11/03/2021 |
| NHTSA ID | 21V856000 |
| Consequence Summary | A loss of power steering assist increases the risk of a crash. |
| Corrective Action | Dealers will replace the power steering pump, free of charge. Owner notification letters were mailed on December 10, 2021. Owners may contact Mack customer service at 1-800-866-1177. Mack's number for this recall is SC0432. |
| Recall Code | SC0432 |
| Potentially Affected | 79 |
| Fire Risk When Parked | No |
| Do Not Drive | No |
| Recall Link | Go to Recall (https://www.nhtsa.gov/recalls?nhtsaId=21V856000) |
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