When I accelerate, my vehicle shakes/vibrates excessively!!

I would love to believe that to be the case; however, they did a complete tune up! Also, since they replaced the carrier bearing & rebalanced the drive shaft, the vibration and shaking is a bit different. The mechanic is now pointing at the "bushings" (all three) that hold the rear differential in place. Does this make sense?

My 04 BMWxi is doing same thing. I bought a new crank sensor, changed spark plugs to Bosch db platinum. If that works have O'reileys run a diagnostic could also be a coil pack. Also check fuel filter could be clogged and not getting enough fuel. Also last resort could be Air Mass Flow Sensor. Let me know what fix's it at email-martinmatthew2294@gmail.com name is Matt and good luck.