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Mack LR Recall 21V856: Power Steering Pump May Fail, Raising Crash Risk

NHTSA campaign 21V856, reported November 3, 2021, 79 vehicles potentially affected.

What this recall means for you

A machining defect in the power steering pump can cause pressure to build up inside it. This may break the shaft seal and lead to a loss of power steering assist, making the vehicle harder to steer.

Losing power steering assist increases the risk of a crash. If you notice the steering becoming unusually stiff or heavy, take the vehicle to a repair facility as soon as possible.

Authorized dealers will replace the power steering pump at no cost to you. Owner notification letters were mailed on December 10, 2021. You can also contact Mack customer service at 1-800-866-1177, and check your vehicle identification number (VIN) for any open recalls.

Check whether this recall is open on your vehicle

The repair is normally free at an authorized dealer.

Official recall notice

Safety recall 21V856Mack Trucks, Inc.
Component
STEERING:HYDRAULIC POWER ASSIST:PUMP
Problem
Mack Trucks, Inc. (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.
Risk
A loss of power steering assist increases the risk of a crash.
Remedy
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.
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.

Affected vehicles

Mack Granite (Gr)2021
Mack LR2021