5 speed transmission vibration

I recently purchased a 2007 taco 4 cylinder (2.7) 5 speed
and as son as i shift gears and the gear engages there is a vibration or humming noise what could this be?

 

Throwout bearing

 

Thx mlc thats what I thought this forum is awesome you guys are helpful
This is my first tacoma

 

possibly the carrier bearing as well if happens only when tje truck moves

 

ujoints are my first guess....I had a 95, and it blew out the front ujoint/knuckle and did some major damage.

 

wilcam47 I kind of thought the same thing possibly ujoints as well I do have a little play and it jiggles a little

 

OP, how many miles on your truck? Do you know if the clutch has ever been changed? The above posters offer some good ideas but I would not rule out the clutch assembly itself especially since there have been a couple of TSBs (Technical Service Bulletins) and clutch part revisions to address clutch issues related to the 5-speed. Most of the problem clutches are reported in the time frame particularly from '05-11.

 

Ive got 188000 miles I dont know if the clutch lever has been changed