Humming Noise with Heater on High and Fan Speed at Med/High (Reposition Blower Motor)

Some customers may comment on hearing a humming noise in the passenger compartment when the heater is on high and the blower motor fan speed is set at medium/high.

This condition may be due to the position of the Heating, Ventilation and Air Conditioning (HVAC) Module blower motor in the blower motor housing causing the incoming airflow to be restricted.

Reposition the HVAC blower motor.

1. Remove the right side sound insulator. Refer to Closeout/Insulator Panel Replacement-Right in the Instrument Panel, Gages and Console sub-section of the Service Manual.



2. Slightly loosen the three blower motor retaining fasteners (1).
3. Slide the motor as far as it can go in the direction of the ventilation/cooling tube (2).
4. Tighten the three blower motor retaining fasteners.

Tighten
Tighten the fasteners to 1.4N·m(12 lb in).

5. Install the right side sound insulator. Refer to Closeout/Insulator Panel Replacement-Right in the Instrument Panel, Gages and Console sub-section of the Service Manual.

For vehicles repaired under warranty use: