Originally Posted by pawelgawel
For cabs you dont need alignment afterwords. . They dont change anything.
It is suspension related and almost anything suspension related, an alignment is recommended, but many people don't do them.
CABs effect caster, if the old bushings were worn the alignment could have be done based off the worn settings, now that the CABs are back to spec, it could have thrown something else off.
Make sure everything is tight in your front end, check ball joints, tie rods, etc. If everything check outs, have your wheels checked for balancing. Did you swap back to your summer wheels after doing the work? Could a wheel weight have fallen off? Could you have hit a pothole and bent a rim recently? Wheels are the most common source of vibrations, have those checked before digging deeper.