2015 Mack Chu, 2015 Mack Granite (gu), 2015 Mack Pinnacle (cxu) Recall: In the affected vehicles, the bolts that attach the seat belt to the seat…
NHTSA campaign 14V553000 · Seat Belts · filed Sep 11, 2014 · verified Jul 30, 2026
The defect
Mack Trucks, Inc. (Mack) is recalling certain 2015 CHU, CXU, and GU trucks manufactured June 4, 2014, through June 18, 2014. In the affected vehicles, the bolts that attach the seat belt to the seat frame may not have been torqued to the required specification. This could cause the bolts to loosen over time, allowing the seat belt to detach.
The risk
If the seat belt detaches from its mounts, the seat belt would fail to properly restrain to the seat occupant, increasing the risk of injury in the the event of a crash.
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 will notify owners, and dealers will tighten the bolts to the required specification, free of charge. The recall began in October 2014. Owners may contact Mack customer service at 1-800-528-6586. Mack's number for this recall is SC0383.
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.safercar.gov.
Affected vehicles
| Make | Model | Model years |
|---|---|---|
| Mack | Chu | 2015 |
| Mack | Granite (gu) | 2015 |
| Mack | Pinnacle (cxu) | 2015 |
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Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 14V553000 (manufacturer number SC0383). Data last verified Jul 30, 2026.