Transmission noise?
 

Auto gearbox. When pulling away I get a strange 'chirruping' sound that lasts a second or so then disappears. More pronounced on harde acceleration. Not present when cruising or for that matter at any point in driving or changing gear, just at pull away.
any ideas?

Re: Transmission noise?
 

Could it be the propshaft centre bearing as mine used to make a strange noise/vibration, all fixed now with new bearing