Thank you for all your responses!
So you think it is a driveshaft not a transmission??
My fear was that is a transmission?I hope I was wrong.
I am hearing this clunk while truck still in motion going about 5-10 mph
, what I am trying to say is that this is not a typical (for 4 Runners that needs yoke lubrication) thud that you can hear in the rear when you come to complete stop and then release your break?
Any way? I do lubricate driveshaft regularly but I will do it again, I hoping that clunk will go away.
I will keep my fingers crossed and post the results.