2020–2021 Mack Granite (gu) Recall: Lower rear pivot cap screws may not be long enough to sufficiently engage…
NHTSA campaign 21V476000 · Suspension · filed Jun 25, 2021 · verified Jul 30, 2026
The defect
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.
The risk
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.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
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.
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
| Make | Model | Model years |
|---|---|---|
| Mack | Granite (gu) | 2020, 2021 |
Related recalls
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- 2021–2022 Mack Anthem (an) and 5 other models — Hubcap compression spring can cause the hubcap to separate
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Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 21V476000 (manufacturer number SC0426). Data last verified Jul 30, 2026.