Mack Fm Recalls & Complaints by Model Year

NHTSA lists 1 safety recall and 0 owner complaints across 1 model year of the Mack Fm (1979).

Pick your Mack Fm model year

• 1979

All Mack Fm recalls (1)

Every NHTSA safety campaign that lists a Mack Fm, most recent first, with the model years each one covers.

1. Leaf spring assembly (suspension)

   NHTSA 79V171000 Reported July 12, 1979 1,706 vehicles potentially affected MACK TRUCKS, INCORPORATED

   The spring seat plate, located between the axle housing and the suspension springs, may deform due to spring bending. As a result, the clamping force in the assembly may be reduced. Loss of clamping force could cause spring failure and the axle will dislocate. Also, the tire could come into contact with the spring.

   Remedy: The dealer will replace the existing spring seat with a newly fabricated seat which is welded to the housing. An improved spring clamping plate and new springs will also be installed without charge.

   Model years: 1979

Other Mack models

• Mack28 complaints
• Anthem (an)12 complaints
• Granite (gr)9 complaints
• CXU6127 complaints
• Ch6 complaints
• Gu6 complaints
• CH6005 complaints
• Cxu5 complaints

Source: NHTSA recall and complaint databases and EPA fuel economy data, October 2026. Complaint counts are owner reports to NHTSA, not verified defects. Recall counts are safety campaigns that list this model year; whether a particular car was already repaired depends on its VIN. How this data is compiled.