2008 Mack Chu, 2008 Mack GU Recall: ON CERTAIN TRUCKS, THE NUT USED TO RETAIN THE STEERING SHAFT MAY OR MAY…
NHTSA campaign 07V322000 · Steering · filed Jul 24, 2007 · verified Jul 30, 2026
The defect
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.
The risk
IF THE NUT WERE TO COME LOOSE AND BE LEFT UNTREATED, THE STEERING SHAFT COULD POTENTIALLY SEPARATE INCREASING THE RISK 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
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.
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.
Affected vehicles
Related recalls
More Mack Chu recalls
- 2015 Mack Chu and 1 other model — In the affected vehicles, the collars that prevent the ball…
- 2015 Mack Chu and 2 other models — In the affected vehicles, the bolts that attach the seat…
- 2014–2015 Mack Chu and 1 other model — Due to a software error, the affected vehicles may not…
- 2010–2014 Mack Chu and 10 other models — Hazard warning lights may fail
- 2007–2015 Mack Chu and 6 other models — Mack Trucks, Inc
Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 07V322000 (manufacturer number SC0326). Data last verified Jul 30, 2026.