Vibration

I have a 1988 S-10 Blazer 2.8 that has a Vibartion at an idle. The blazer starts easy hot or cold, the vibration dissapears at @ 30 mph. I have removed the belt from the pumps and alternator and started the truck and the vibration is still there. I pulled the harmonic balance off and started the truck and still had vibration I am getting ready to check the flex plate and torque converter. does anyone know what else this could be. I dont know jack please help

How about a tuneup?

A tune-up was the first thing I did before I began everything else

What did it include?

We need to know these kind of details before we can help anyone.

Please tell us everything you have replaced recently on the truck.

check your motor and tranny mounts.