Does the 1978 Mack MC have any recalls?

2 recalls found in NHTSA data as of September 22, 2026, covering: engine and engine cooling, visibility. 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 MC 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 MC?

0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.

1978 Mack MC recalls

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

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

For the 1978 Mack MC. 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.

Check your VIN with NHTSA

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 MC 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

January 9, 1979NHTSA 79V014000358 vehicles potentially affected

Visibility › Defroster/defogger/HVAC system › Heater core

Summary: A deficiency in the routing of the heater duct hose could allow the hose to rest against a terminal post of the accessory relay. Vibration will eventually cause the terminal post to penetrate the hose fabric and short circuit the wire reinforcement and overload the circuit.
Remedy: Dealer will replace the portion of the existing hose that is closest to the accessory relay with an all-rubber hose.

This recall on nhtsa.gov

Owner complaints

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

Other Mack MC years

Other 1978 Mack models

Questions

Does the 1978 Mack MC have any recalls?: 2 recalls found in NHTSA data as of September 22, 2026, covering: engine and engine cooling, visibility. 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 MC 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 MC?: 0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.