6
recalls
The Mack HMM has 6 recalls covering 71,807 vehicles as reported; model year 1977 is covered by the most (4).
Updated Oct 11, 2026 · recalls to Oct 6, 2026
Recalls
6
Most for 1977: 4
Units affected
72K
As reported
Overall stars
-
Not rated
Complaints, 12 mo
0
To Sep 2026
Do-not-drive
0
None
By model year
Which model years are covered by the most recalls, and which get the most complaints
Recalls by model year
How many recalls cover each model year. Hover a year for the count.
Parts recalled
Recalls of the Mack HMM by component
- Seat belts2 · 6,602 units
- Engine and engine cooling1 · 48K units
- Power train1 · 105 units
- Service brakes, air1 · 9,700 units
- Suspension1 · 7,400 units
Mack HMM recalls
Newest first
| Date | Recall | Hazard | Units |
|---|---|---|---|
| Apr 4, 1978 | Mack DM, DMM, F, HMM and 9 more (1974-1976): Service brakes, airNo. 78V068000 | Other or not stated | 9,700 |
| Nov 21, 1977 | Mack DM, F, HMM, MB and 8 more (1977): SuspensionNo. 77V205000 | Other or not stated | 7,400 |
| Nov 21, 1977 | Mack HMM (1976-1977): Seat beltsNo. 77V204000 | Other or not stated | 11 |
| Oct 12, 1977 | Mack CF, DM, DMM, F and 5 more (1977): Seat beltsNo. 77V174000 | Other or not stated | 6,591 |
| Oct 12, 1977 | Mack CF, DM, DMM, F and 10 more (1972-1977): Engine and engine coolingNo. 77V173000 | Other or not stated | 48,000 |
| Jul 28, 1976 | Mack DMM, HMM, RM (1976): Power trainNo. 76V118000 | Other or not stated | 105 |
Related pages
Questions and answers
Is the 1977 Mack HMM recalled?
Yes: 4 recalls cover the 1977 Mack HMM. Check the recall pages below for what is wrong and the free fix; a dealer can tell if a single vehicle still needs the repair.
How many recalls does the Mack HMM have?
6 recalls cover the Mack HMM, for 71,807 vehicles as reported. The most common problem is seat belts (2 recalls).
A recall means the maker found a safety problem and offers a free fix; it does not mean every unit has the problem. Units affected are as reported by the company. Popular models sell more and so have more recalls and complaints. Official public data, updated daily. Models are written as published, so a few versions of one model can be listed under slightly different names.