Vehicle recall 07V322000 · July 24, 2007
Mack CHU and GU
On certain trucks, the nut used to retain the steering shaft may or may not be a lock nut that has the locking feature.
Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.
- Summary
- On certain trucks, the nut used to retain the steering shaft may or may not be a lock nut that has the locking feature. A lock nut is required to provide additional resistance to ensure that the nut does not come loose.
- Consequence
- If the nut were to come loose and be left untreated, the steering shaft could potentially separate increasing the risk of a crash.
- Remedy
- Dealers will replace the steering shaft pinch bolts and locknuts free of charge. The recall began on August 24, 2007. Owners may contact mack trucks at 1-800-528-6586.
- Notes
- Mack trucks recall no. SC0326.CUSTOMERS may also contact the national highway traffic safety administration's vehicle safety hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to http://www.safercar.gov.
Recall details
- NHTSA campaign
- 07V322000
- Reported to NHTSA
- July 24, 2007
- Filed by
- MACK TRUCKS, INC
- Manufacturer campaign
- SC0326
- Owner notification
- August 24, 2007
- Vehicles potentially affected
- 1,072
- Initiated by
- the manufacturer
- Components
- Steering
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.