Skip to content
AnyRecalls

1978 Mack DMM recalls

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

3 recalls found in NHTSA data as of September 22, 2026

For the 1978 Mack DMM. These apply to the model and year, not to one particular vehicle: check your VIN to see whether yours is included and whether it has been repaired.

Has your Mack been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Mack dealer can also check your VIN. Recall repairs are free.

1978 Mack DMM recalls, newest first

May 31, 1979NHTSA 79V13300023,000 vehicles potentially affected

Engine and engine cooling › Engine

Summary
In the event of turbocharger compressor wheel failure, one or more of the four capscrews that hold the turbocharger together may be struck by parts of the compressor wheel, resulting in the capscrews being damaged. If these capscrews are damaged to the point that they allow the compressor back plate to dislocate from the turbocharger bearing housing, engine lubricating oil may be allowed to escape under pressure, contacting the engine exhaust manifold sections or turbocharger turbine housing.
Remedy
Dealer will install a shield for the heads of the four capscrews, along with stronger sae 8 grade 8 capscrews, if necessary, at no cost to owner.

This recall on nhtsa.gov

October 3, 1978NHTSA 78V21000019,370 vehicles potentially affected

Service brakes, air › Antilock › Interconnecting assembly(wiring)

Summary
Delays of up to about 2 seconds may exist in the brake application times to the brakes on the bogie axles in the presence of certain types of wheel speed sensor signal discontinuities or distortions that may occur as a result of sensor wire failure. This constitutes a non-compliance to federal motor vehicle safety standard no. 121, "air brake systems".
Remedy
Dealer will install new wheel speed sensors that incorporate improved wiring and the present bogie anti-wheel lock system will be changed to an axle-to-axle system for improved reliability.

This recall on nhtsa.gov

August 8, 1978NHTSA 78V17200013,800 vehicles potentially affected

Steering › Linkages › Knuckle › Spindle › Arm

Summary
The existing cross steering arms may have insufficient fatigue life in the neck area. This is near the boss for the cross steering tube ball joint connection. Failure of either of the cross steering levers could lead to loss of steering control of the right front wheel.
Remedy
The dealer will inspect and, if necessary, install cross steering arms of improved design and greater strength.

This recall on nhtsa.gov

Owner complaints

No owner complaints about the 1978 Mack DMM were found in NHTSA’s complaint data.

Other Mack DMM years

Other 1978 Mack models

Questions

Does the 1978 Mack DMM have any recalls?
3 recalls found in NHTSA data as of September 22, 2026, covering: engine and engine cooling, service brakes, air, steering. Recalls apply to the model and year; whether a particular vehicle is included, and whether it has been repaired, depends on its VIN.
How do I check if my 1978 Mack DMM recall has been fixed?
Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Mack dealer. Recall repairs are free. NHTSA's VIN search doesn't list recalls that were already repaired.
How many complaints have owners filed about the 1978 Mack DMM?
0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.