- The problem
- 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.
- The fix
- Dealer will replace the original fan with a steel fixed blade fan, free of charge.
Vehicle safety record
1973 Mack DM Problems, complaints & recalls
No owner complaints about the 1973 Mack DM have been filed with NHTSA. It is covered by 4 recalls, the latest in October 1977 for the fan.
NHTSA data checked
DMore problems than a typical DM year, for its age
- Complaints
- 0
- Recalls
- 4
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
1973 Mack DM recalls 4
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
What owners say
Be the first DM owner to share.
Problems or none - your experience is exactly what the next buyer is looking for. Write it now
No complaints about the 1973 Mack DM yet
No owner has filed a complaint about this vehicle with NHTSA. If yours has a problem, share it here and report it to NHTSA.
Mack DM: every year compared
All DM yearsQuestions about the 1973 Mack DM
Does the 1973 Mack DM have any recalls?
Yes - NHTSA lists 4 recalls for the 1973 Mack DM: fan (October 1977); multiple axle (June 1975); switch (November 1974); service brakes, air (May 1973). Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
How many complaints has the 1973 Mack DM had?
None have been filed with NHTSA so far.
Is the 1973 Mack DM a reliable vehicle?
Its Safety Index is 26 out of 100 (grade D: more problems than a typical Mack DM year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
What should I do if my 1973 Mack DM has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data