MACK 2021 MACK GRANITE (GU) Recall
Check Your Product
According to the National Highway Traffic Safety Administration (NHTSA)
Product
2021 MACK GRANITE (GU)
Brand
MACK
Lot Codes / Batch Numbers
Not specified in NHTSA notice. Check official source for details.
Products Sold
Model Year 2021
Mack Trucks, Inc. is recalling certain 2021 MACK GRANITE (GU) vehicles due to suspension:multiple axle issues. The short screws can cause the hardware to separate from the suspension system and become a road hazard, increasing the risk of a crash or injury..
Summary derived from NHTSA notice
Reason for Recall
As stated by NHTSA
Mack Trucks, Inc. (Mack Trucks) is recalling certain 2020-2021 Granite vehicles equipped with certain SL2065 steerable lift axles. The lower rear pivot cap screws may not be long enough to sufficiently engage the locking feature of the corresponding nuts.
Reported concern (NHTSA)
The short screws can cause the hardware to separate from the suspension system and become a road hazard, increasing the risk of a crash or injury.
Recommended Action
Per NHTSA guidance
Mack Trucks will inspect the suspension system and replace the lower rear pivot cap screws, as necessary, free of charge. Owner notification letters were mailed on July 30, 2021. Owners may contact Mack Trucks' customer service at 1-800-866-1177. Mack Trucks' number for this recall is SC0426.
Verify this information on the official source
For complete details and official instructions, check the National Highway Traffic Safety Administration (NHTSA) directly.
View official NHTSA recall noticePage updated: Jan 10, 2026