Vehicle recall 13V492000 · October 17, 2013
Mack CHU, Granite (gu) and 3 more models
The pro-torque nut may not have been installed correctly, which may result in a loosening of the nut.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- Mack Trucks is recalling certain model year 2013-2014 CHU, CXU, GU, LEU, and MRU vehicles manufactured with pro-torque axle spindle nuts from August 28, 2012, through August 16, 2013. The pro-torque nut may not have been installed correctly, which may result in a loosening of the nut.
- Consequence
- If the nut comes loose, the hub assembly may separate from the vehicle, increasing the risk of a crash.
- Remedy
- Mack Trucks will notify owners, and dealers will inspect and repair the vehicles, as necessary, free of charge. The recall began on November 12, 2013. Mack's recall number is SC0371. Owners may contact Mack Trucks at 1-336-393-2000.
- 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.safercar.gov.
Recall details
- NHTSA campaign
- 13V492000
- Reported to NHTSA
- October 17, 2013
- Filed by
- Mack Trucks, Inc.
- Manufacturer campaign
- SC0371
- Owner notification
- November 12, 2013
- Vehicles potentially affected
- 1,155
- Initiated by
- the manufacturer
- Components
- Power train › Axle hubs
Vehicles covered
As listed by NHTSA. A recall usually covers only some vehicles of each model and year, often a production date range.
Has your Mack been repaired?
Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.
NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.