Hey there, i have a 97 chevy blazer 4.3 LT and when the engines on idle, it shakes like crazy and actually shakes the whole vehicle. i shot this video to elaborate, please check it below and give me an idea where to look or what to change because it is really disturbing.


thanks in advance!

 

I'd say your engine mount(s) are bad and need to be replaced. The stock ones suck and are prone to failure. Not a fun job at all. I put polyurethane ones on mine and they go on a hell of a lot easier.