Intermittent Howling Sound

Wind blowing over the hole in your lower control arms.

 

I checked the TSB. In the title it states it applies to DC models. I have an AC. Reading the body of the text the table shows all MT models covered. I am wondering if that is DC MT's or all DC & AC MT's ?

 

Any of you guys here end up with a fix?

 

I visited my local Toyota dealership and told them that my truck was howling/whining at 50 to 60 mph and that the rear differential was also leaking.
On my first appointment with 6,200 on the odometer, they confirmed the problems, replaced the rear leaf springs, installed the dampers and replaced the rear differential gasket.

The howling is gone for now.

The new leaf springs have an additional short section of spring at the bottom/front of the spring.