The problem
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 fix
Dealer will replace the portion of the existing hose that is closest to the accessory relay with an all-rubber hose.
Contacts
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.
What to do
- Check your VIN. Enter it at nhtsa.gov/recalls - it shows whether this recall applies to your vehicle and whether the repair has been done.
- Call a dealer. Any authorized Mack dealer will do the repair free, whether or not you bought the vehicle there. Quote campaign 79V014000.
- Ask about parts and a loaner. If parts aren't available yet, ask what to do in the meantime.
- Keep your paperwork. If you paid for this repair before the recall, you may be able to get reimbursed - here's how.