Hydraulic power assist: pumpRecall 21V-856 · Mack vehicles
Mack Trucks, Inc. recall 21V-856 covers 79 Mack vehicles for a hydraulic power assist: pump problem, reported to NHTSA on November 3, 2021. The manufacturer's latest report (2023 Q3) shows 51% of affected vehicles repaired.
Source: NHTSA recall 21V856000 and manufacturer quarterly reports. Started by the manufacturer.
The 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.
The risk
A loss of power steering assist increases the risk of a crash.
The fix
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 repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.
How fast cars are being fixed
51%repaired
Share of affected vehicles repaired in each quarterly report the manufacturer filed with NHTSA.