random vibration in 92 s10 blazer

my blazer vibrates randomly and when it starts vibrating it will stop if i give it more gas or let off the gas. I have been told by one mechanic that it's the torque converter and from another that it's the rear wheel bearings. I don't have any clue whether it's either of these but it's been doing it for about 2 years and i would like for it to stop. Any information would be appreciated.

my blazer vibrates randomly and when it starts vibrating it will stop if i give it more gas or let off the gas. I have been told by one mechanic that it's the torque converter and from another that it's the rear wheel bearings. I don't have any clue whether it's either of these but it's been doing it for about 2 years and i would like for it to stop. Any information would be appreciated.

determine if it drive train or just engine. if it does it when parked and changing rpm, it related to engine... check engine mounts, tranny to engine bolts (mine was found to be missing few top hard to see ones) ... also check 2 mount bolts under tranny, if one broke like i also had, engine and tranny will vibrate more then normal.