So i have a 2000 ecsb, the carrier bearing was shot so i replaced it, before the replacement it would vibrate pretty bad as soon as would accelerate from a complete stop. Now it doesnt do it from a complete stop but does it when i accelerate adn reach around 3k rpms. Or if i punch it feel it vibrate and it feels like its coming from the drive shaft but im not 100% sure. anyone have a similar problems like this?

 

U joints ok?

 

yes, u joints are good, only other thing i can think of is my pinion bearing maybe, reason i say this is due to prior experiences.

 

If you are lowered, have you measured your pinion angle yet to make sure it's not off. That can cause vibrations.