i have a 1990 chevy camaro rs 3.1 tpi and i think my trans or rear end is going but ive never experianced that.but what happens is when i take my foot off the gas the car bucks,but if its accelerating or breaking its perfectly fine,it only does it once every min or so,but its a big jurk when it does happen(shakes whole car)


new icm,intake manifold,engine ground,new front seal in trans

i just cant figure it out and i dont wanna replace my trans if thats not whats wrong lol dont have 1200$ just sittin around

 

Any grinding/whining from the rear end? Bucking can definitely be caused by improper pinion depth. Jack the rear of the car up, get both wheels off the ground. Spin one wheel back and forth listen for clunking, do this with the drive shaft as well. How much play is there in the rear end when you do this?