driveline vibration

just bought a 2002 prerunner one owner. my friend passed away at age 95. he bought the truck new. it has ony 31,000 miles and has never sit out in the rain.it's still new. has a v6 and automatic and extended cab. but it has that freaking vibration. now the job of finding it. any help will be appreciated

 

First thing to check with any truck is the condition of the drive shaft ujoints.

 

I had a difficult vibration issue....Was the rear drive shaft slider and joint there......no grease. Replaced and greased all OK

 

Possibly a carrier bearing which holds up the two-piece driveline. Fairly easy to replace and not too pricey. I just did mine on a lifted truck and got rid of a lot of the vibration. I'm in the middle of doing some front end-work and don't know yet if I've solved all the issues.

Here's a write-up I followed to replace my carrier bearing:

https://www.tacomaworld.com/threads/how-to-replacing-carrier-bearing.260283/

 

If you drop the drive shaft out replace everything while your at it.