Does It Possibly Sound Like Water Being Vacuumed Up ?
Lift up floor mats in the front and make sure the floor’s not wet. I see several (many) bulletins pertaining to HVAC system drain tubes becoming clogged on these vehicles. When this happens plain old water accumulates in the Heating, Ventilation, and Air Conditioning housing and can’t drain to the ouside of the vehicle as it’s supposed to do. It can and does spill over.
Check it out and back to us.
Thanks,
CSA