Product review (5 stars): Saved Me Buying A New Dryer
My dryer seized up rather suddenly and after some Internet sleuthing and opening the dryer chassis I discovered that it was due to the main motor failing.  Normally the blower housing could be easily removed, but in my case the blower had gotten wedged on so I had to replace that as well.  The motor has been working for a few months now with no issues.  The installation - even having to deal with the blower as well - was pretty easy.  If you are moderately handy you can replace this motor.  The motor also came very well packed which was nice as the motor is heavier than I expected for the relatively small size.