2006–2008 Mack CHN, 2006–2008 Mack CL, 2006–2008 Mack CT and 5 other models Recall: ON CERTAIN TRUCKS EQUIPPED WITH A SAF HOLLAND SIMPLEX FIFTH WHEEL, THE…
NHTSA campaign 07V497000 · Trailer Hitches · filed Oct 23, 2007 · verified Jul 30, 2026
The defect
ON CERTAIN TRUCKS EQUIPPED WITH A SAF HOLLAND SIMPLEX FIFTH WHEEL, THE LEVER ARM PIVOT BOLT MAY HAVE BEEN OVER TIGHTENED. AN OVER TIGHTENED PIVOT BOLT CAN DISTORT THE PIVOT BOLT SPACER SLEEVE, WHICH MAY PREVENT THE FIFTH WHEEL LATCH JAW FROM CLOSING AND LATCHING SECURELY AROUND THE TRAILER KING PIN.
The risk
THERE IS A POSSIBILITY THAT THE PIVOT BOLT CAN BECOME LOOSE WITHOUT THE DRIVER'S KNOWLEDGE. WHEN THIS OCCURS, THE DRIVER COULD DRIVE AWAY AND THE TRAILER COULD BECOME DISENGAGED, 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 PIVOT BOLT AND SLEEVE WITH A HEX HEAD SHOULDER BOLT AND WASHER FREE OF CHARGE. THE RECALL BEGAN ON JANUARY 28, 2008. OWNERS MAY CONTACT MACK TRUCKS AT 1-800-528-6586.
MACK TRUCKS RECALL NO. SC0331.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 CHN recalls
- 2002–2007 Mack CH and 3 other models — ON CERTAIN TRUCKS EQUIPPED WITH ASET AC MODEL ENGINES, THE…
- 2006–2007 Mack CHN and 8 other models — ON CERTAIN TRUCKS EQUIPPED WITH BENDIX SR-7 SPRING BRAKE…
- 2005–2007 Mack CHN and 6 other models — ON CERTAIN TRUCKS EQUIPPED WITH PARKER SINGLE CHECK VALVES…
- 2007 Mack CH and 3 other models — CERTAIN TRUCKS WERE RECALLED FOR THE INSTALLATION OF…
- 2007 Mack CHN and 2 other models — ON CERTAIN TRUCKS, THE AXLE HOUSINGS MAY HAVE BEEN…
Other campaigns involving Mack vehicles
Source: NHTSA recall database, campaign 07V497000 (manufacturer number SC0331). Data last verified Jul 30, 2026.