1975 Mack U Recalls, Complaints & Specs
6 safety recalls list the 1975 Mack U. Check your own VIN below.
6 safety recalls for the 1975 Mack U
Most recent first. Recall repairs are free at any authorised dealer. Click a recall for the full defect, consequence and remedy text.
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Service brakes, air: control unit/module
An axle "no brake" condition could result from an eaton controller internal electrical malfunction. This condition may cause the anti-wheel lock valve solenoid to be continuously energized and prevent the brakes from being applied on one of the axles. As a result, the anti-wheel lock warning lamp is not activated.
Remedy: The dealer will inspect and, if necessary, replace the anti-wheel lock controller without charge to owner.
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Multiple axle (suspension)
The tee bracket, which is mounted on the front axle of the bogie, may fail due to vibration brought on by road surface irregularities. Bracket failure would leave the tee bracket unsupported and cause broken hose connector fittings. This would result in automatic application of the spring emergency brakes.
Remedy: The dealer will replace the defective bracket with a redesigned version.
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Fan (engine and engine cooling)
The flex blade fans on the involved vehicles may develop cracks in the laminated stiffener as a result of fatigue during operation. If such a condition exists and the cracks go undetected, continued operation could cause pieces of the stiffener to break off.
Remedy: Dealer will replace the original fan with a steel fixed blade fan, free of charge.
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Leaf (suspension)
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Interconnecting assembly(wiring) (service brakes)
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Hoses, lines/piping, and fittings (service brakes)
No owner complaints on file
NHTSA has no owner complaints on file for the 1975 Mack U. For context, the average model year in NHTSA's database has dozens; a zero can mean a reliable vehicle, a rare one, or both.
Compare Mack U model years
Recall and complaint counts for every Mack U model year in NHTSA's database.
| Model year | Recalls | Complaints |
|---|---|---|
| 1967 Mack U | 1 | 0 |
| 1968 Mack U | 1 | 0 |
| 1969 Mack U | 2 | 0 |
| 1970 Mack U | 3 | 0 |
| 1971 Mack U | 5 | 0 |
| 1972 Mack U | 4 | 0 |
| 1973 Mack U | 5 | 0 |
| 1974 Mack U | 6 | 0 |
| 1975 Mack U | 6 | 0 |
| 1976 Mack U | 3 | 0 |
| 1977 Mack U | 8 | 0 |
| 1978 Mack U | 5 | 0 |
| 1979 Mack U | 1 | 0 |
| 1987 Mack U | 1 | 0 |
| 1988 Mack U | 1 | 0 |
| 1989 Mack U | 2 | 0 |
| 1990 Mack U | 1 | 0 |
| 1991 Mack U | 1 | 0 |
| 1992 Mack U | 1 | 0 |
Checking a specific 1975 Mack U
How do I know if my 1975 Mack U has an open recall?
Enter your 17-character VIN above. The VIN is on the driver's side dashboard (visible through the windshield), the driver's door jamb sticker, and your registration or insurance card. The check runs against NHTSA's live database and tells you which campaigns list your vehicle. 6 campaigns currently list the 1975 Mack U; your car may already have been repaired under some of them.
Is the recall repair free?
Yes. Under federal law, manufacturers must fix safety recalls at no charge for vehicles up to 15 years old from the date of sale to the first owner. Contact any authorised Mack dealer with your VIN and the NHTSA campaign number (for example 75V190000).
What is the difference between a recall and a complaint?
A recall is a safety campaign filed by the manufacturer or ordered by NHTSA, with a defined defect and remedy. A complaint is a report an owner sent to NHTSA; it is not verified, but patterns of complaints are what trigger NHTSA investigations and, eventually, recalls.
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.