I have an 89 firebird formula 350. I dont know what the driveline is and i need some help finding out because i dont know how. But it is an automatic. Anyway, i just bought the car about 2 months ago and i noticed some loud vibrations from the back of the car. It starts just before the car shifts to the next higher gear but then go away as soon as its in the next gear. I dont know if it is a problem that needs immidiate attention or what.

A little help here!!!

 

Broken trans mount?

Severely worn LCA bushings?

Tweaked parts?

Bend over and look under the car?

How is a vibration loud?

U need to check the basics and tell us what u find and then we can help steer u in the right direction.

later
Jeremy

 

Ok well its more like a humming or buzzing sound. And like i said, it happens before gear shifts. Im gonna get it looked at and if they find out whats going on, ill post it. Im gonna go take another look at it now.