2006 strange noise on left turns

[cjmrice]

I have a 2006 gr caravan, occassionaly, during warm operation, it makes a growling noise, when making a left turn. also while stopped at a traffic light i experience a fine vibration in the steering wheel. Took it to the dealer and he cant find anything wrong, said fluid and PS were fine, took it back 2 weeks later, still couldnt find source but fluid was below add mark, no sign of a leak, still under warranty, 3.8l, 22k miles, any ideas? thanks for a great forum! :cool:

[acton mike]

sounds suspiciously like a P/S pump; the vibration through the wheel makes me think that

any one else have an idea