RoadVitals

NHTSA safety recall

Recall 79V014000: VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:HEATER CORE

MACK TRUCKS, INCORPORATED · Reported to NHTSA Jan 9, 1979

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.

Check a VIN on NHTSA.gov
Units potentially affectedThe manufacturer's own estimate of how many vehicles or items of equipment may contain the defect. It is not a count of failures, and not every unit in the range is necessarily affected.
358
Model years coveredModel years in our database that NHTSA matched to this campaign. Whether an individual vehicle is covered still depends on its VIN.
2
Models covered
2
Grouped from the model years above
Reported to NHTSA
Jan 9, 1979
Production Mar 1, 1978 – Nov 17, 1978

What this recall covers

NHTSA's campaign record, quoted as published

The defect

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.

The remedy

DEALER WILL REPLACE THE PORTION OF THE EXISTING HOSE THAT IS CLOSEST TO THE ACCESSORY RELAY WITH AN ALL-RUBBER HOSE.

Notes

VEHICLE DESCRIPTION: TRUCKS.SYSTEM: ELECTRICAL; HEAT DUCT HOSE.CONSEQUENCES OF DEFECT: DUE TO A LACK OF CIRCUIT BREAKER PROTECTION, FIRE ANDLOSS OF ALL ELECTRICAL CIRCUITS, INCLUDING HEADLIGHTS, CAN OCCUR AND POSSIBLYLEAD TO A VEHICLE ACCIDENT.

A safety recall is issued when a manufacturer or NHTSA determines that a vehicle has a safety-related defect or does not comply with a federal motor vehicle safety standard. Recall repairs are free. Whether a specific vehicle is covered depends on its VIN — a recall listed for a model year does not necessarily apply to every vehicle of that year.

Campaign details

Identifiers and dates as filed with NHTSA

Manufacturer
MACK TRUCKS, INCORPORATED
Manufacturer's campaign number
Not recorded
NHTSA campaign number
79V014000
Units potentially affected
358
Report received
Jan 9, 1979
Production range
Mar 1, 1978 – Nov 17, 1978
Campaign type
Vehicle
Federal safety standard (FMVSS)
Not recorded

Vehicles covered

2 model years across 2 models

Recalls apply to specific vehicles, not to every vehicle of a model year. Check your VIN with NHTSA or your manufacturer's dealer to confirm whether a recall affects your vehicle.